HighCVE-2025-9784

Undertow: undertow madeyoureset http/2 ddos vulnerability (CVE-2025-9784)

Published 02.09.2025Last modified 14.10.2026Sources: Red Hat, CVE.org, OSV, EUVD, BSI

What is affected, what to do

Update Undertow to version 2.2.38.Final, Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 to version 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7, Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 to version 0:2.0.41-8.SP9_redhat_00001.1.el7eap.

Affected: Undertow lt *..2.2.38.Final
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 lt *..0:1.4.18-21.SP19_redhat_00001.1.ep7.el7
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 lt *..0:2.0.41-8.SP9_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4.24 lt *..2.2.39.Final-redhat-00001
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.2.39-1.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:7.4.24-4.GA_redhat_00002.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 lt *..0:2.2.39-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 lt *..0:7.4.24-4.GA_redhat_00002.1.el8eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 lt *..0:2.2.39-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 lt *..0:7.4.24-4.GA_redhat_00002.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:1.83.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:33.0.0-2.jre_redhat_00003.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:4.0.6-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:1.0.0-3.redhat_00009.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:2.0.2-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 lt *..0:2.3.23-1.SP3_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:1.83.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:33.0.0-2.jre_redhat_00003.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:4.0.6-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:1.0.0-3.redhat_00009.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:2.0.2-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 lt *..0:2.3.23-1.SP3_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1.3 lt *..2.3.20.SP4-redhat-00001
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:4.0.10-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:1.82.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:801.3.0-1.GA_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:1.0.1-3.redhat_00003.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:6.6.36-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:4.0.2-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:2.5.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:2.3.20-2.SP4_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:8.1.3-4.GA_redhat_00006.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:5.0.12-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:2.6.6-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 lt *..0:8.1.1-4.GA_redhat_00007.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:4.0.10-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:1.82.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:801.3.0-1.GA_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:1.0.1-3.redhat_00003.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:6.6.36-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:4.0.2-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:2.5.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:2.3.20-2.SP4_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:8.1.3-4.GA_redhat_00006.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:5.0.12-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:2.6.6-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 lt *..0:8.1.1-4.GA_redhat_00007.1.el9eap
Red Hat Single Sign-On 7.6 for RHEL 7 lt *..0:18.0.20-1.redhat_00001.1.el7sso
Red Hat Single Sign-On 7.6 for RHEL 8 lt *..0:18.0.20-1.redhat_00001.1.el8sso
Red Hat Single Sign-On 7.6 for RHEL 9 lt *..0:18.0.20-1.redhat_00001.1.el9sso
Red Hat RHEL-8 based Middleware Containers lt *..7.6-85
Fixed in: Undertow 2.2.38.Final
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:7.4.24-4.GA_redhat_00002.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:7.4.24-4.GA_redhat_00002.1.el8eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:7.4.24-4.GA_redhat_00002.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.83.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:33.0.0-2.jre_redhat_00003.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:4.0.6-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.0.0-3.redhat_00009.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.0.2-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.3.23-1.SP3_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.83.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:33.0.0-2.jre_redhat_00003.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:4.0.6-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.0.0-3.redhat_00009.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.0.2-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.3.23-1.SP3_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1.3 2.3.20.SP4-redhat-00001
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.10-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.82.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:801.3.0-1.GA_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.0.1-3.redhat_00003.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:6.6.36-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.2-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:2.5.0-1.redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:2.3.20-2.SP4_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:8.1.3-4.GA_redhat_00006.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:5.0.12-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:2.6.6-1.Final_redhat_00001.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:8.1.1-4.GA_redhat_00007.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:4.0.10-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:1.82.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:801.3.0-1.GA_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:1.0.1-3.redhat_00003.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:6.6.36-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:4.0.2-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:2.5.0-1.redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:2.3.20-2.SP4_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:8.1.3-4.GA_redhat_00006.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:5.0.12-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:2.6.6-1.Final_redhat_00001.1.el9eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:8.1.1-4.GA_redhat_00007.1.el9eap
Red Hat Single Sign-On 7.6 for RHEL 7 0:18.0.20-1.redhat_00001.1.el7sso
Red Hat Single Sign-On 7.6 for RHEL 8 0:18.0.20-1.redhat_00001.1.el8sso
Red Hat Single Sign-On 7.6 for RHEL 9 0:18.0.20-1.redhat_00001.1.el9sso
Red Hat RHEL-8 based Middleware Containers 7.6-85

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Metrics

7.5

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

7.5

CVSS v3

Severity High on the scale from 0 to 10.

Source: Red Hat, CVE.org, OSV, EUVD, BSI

2.3 %

EPSS score

Moderate — model estimates 1-10% exploitation likelihood.

Source: FIRST EPSS, percentile 83.4

Show all metrics

Severity: High
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 103.87 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 7.5 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 7.5
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 2.3 %; Moderate — model estimates 1-10% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 83.4; Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 02.09.2025
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-770

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).

Source: redhat_csaf, cvelistv5, OSV (Open Source Vulnerabilities), ENISA EUVD, NVD (NIST), CVE.org (MITRE), BSI CSAF, BSI WID Portal

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
—	undertow	`< 2.2.38.Final`	`2.2.38.Final`
Red Hat	Red Hat build of Apache Camel - HawtIO 4	`—`	—
Red Hat	Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8	`—`	—
Red Hat	Red Hat Data Grid 8	`—`	—
Red Hat	Red Hat Enterprise Linux 10	`—`	—
Red Hat	Red Hat Enterprise Linux 8	`—`	—
Red Hat	Red Hat Enterprise Linux 9	`—`	—
Red Hat	Red Hat Fuse 7	`—`	—
Red Hat	Red Hat JBoss Enterprise Application Platform 7	`—`	—
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	`< 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7`	`0:1.4.18-21.SP19_redhat_00001.1.ep7.el7`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	`< 0:2.0.41-8.SP9_redhat_00001.1.el7eap`	`0:2.0.41-8.SP9_redhat_00001.1.el7eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7	`< 0:2.2.39-1.Final_redhat_00001.1.el7eap` `< 0:7.4.24-4.GA_redhat_00002.1.el7eap`	`0:2.2.39-1.Final_redhat_00001.1.el7eap` `0:7.4.24-4.GA_redhat_00002.1.el7eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8	`< 0:2.2.39-1.Final_redhat_00001.1.el8eap` `< 0:7.4.24-4.GA_redhat_00002.1.el8eap`	`0:2.2.39-1.Final_redhat_00001.1.el8eap` `0:7.4.24-4.GA_redhat_00002.1.el8eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9	`< 0:7.4.24-4.GA_redhat_00002.1.el9eap` `< 0:2.2.39-1.Final_redhat_00001.1.el9eap`	`0:7.4.24-4.GA_redhat_00002.1.el9eap` `0:2.2.39-1.Final_redhat_00001.1.el9eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4.24	`< 2.2.39.Final-redhat-00001`	`2.2.39.Final-redhat-00001`
Red Hat	Red Hat JBoss Enterprise Application Platform 8	`—`	—
Red Hat	Red Hat JBoss Enterprise Application Platform 8.0	`—`	—
Red Hat	Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8	`< 0:1.0.0-3.redhat_00009.1.el8eap` `< 0:2.0.2-1.Final_redhat_00001.1.el8eap` `< 0:2.3.23-1.SP3_redhat_00001.1.el8eap` `< 0:4.0.6-1.redhat_00001.1.el8eap` `< 0:1.83.0-1.redhat_00001.1.el8eap` `< 0:33.0.0-2.jre_redhat_00003.1.el8eap`	`0:1.0.0-3.redhat_00009.1.el8eap` `0:2.0.2-1.Final_redhat_00001.1.el8eap` `0:2.3.23-1.SP3_redhat_00001.1.el8eap` `0:4.0.6-1.redhat_00001.1.el8eap` `0:1.83.0-1.redhat_00001.1.el8eap` `0:33.0.0-2.jre_redhat_00003.1.el8eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9	`< 0:33.0.0-2.jre_redhat_00003.1.el9eap` `< 0:4.0.6-1.redhat_00001.1.el9eap` `< 0:2.3.23-1.SP3_redhat_00001.1.el9eap` `< 0:1.83.0-1.redhat_00001.1.el9eap` `< 0:2.0.2-1.Final_redhat_00001.1.el9eap` `< 0:1.0.0-3.redhat_00009.1.el9eap`	`0:33.0.0-2.jre_redhat_00003.1.el9eap` `0:4.0.6-1.redhat_00001.1.el9eap` `0:2.3.23-1.SP3_redhat_00001.1.el9eap` `0:1.83.0-1.redhat_00001.1.el9eap` `0:2.0.2-1.Final_redhat_00001.1.el9eap` `0:1.0.0-3.redhat_00009.1.el9eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8	`< 0:2.5.0-1.redhat_00001.1.el8eap` `< 0:1.0.1-3.redhat_00003.1.el8eap` `< 0:5.0.12-1.Final_redhat_00001.1.el8eap` `< 0:2.6.6-1.Final_redhat_00001.1.el8eap` `< 0:2.3.20-2.SP4_redhat_00001.1.el8eap` `< 0:1.82.0-1.redhat_00001.1.el8eap` `< 0:6.6.36-1.Final_redhat_00001.1.el8eap` `< 0:801.3.0-1.GA_redhat_00001.1.el8eap` `< 0:8.1.3-4.GA_redhat_00006.1.el8eap` `< 0:4.0.2-1.Final_redhat_00001.1.el8eap` `< 0:8.1.1-4.GA_redhat_00007.1.el8eap` `< 0:4.0.10-1.redhat_00001.1.el8eap`	`0:2.5.0-1.redhat_00001.1.el8eap` `0:1.0.1-3.redhat_00003.1.el8eap` `0:5.0.12-1.Final_redhat_00001.1.el8eap` `0:2.6.6-1.Final_redhat_00001.1.el8eap` `0:2.3.20-2.SP4_redhat_00001.1.el8eap` `0:1.82.0-1.redhat_00001.1.el8eap` `0:6.6.36-1.Final_redhat_00001.1.el8eap` `0:801.3.0-1.GA_redhat_00001.1.el8eap` `0:8.1.3-4.GA_redhat_00006.1.el8eap` `0:4.0.2-1.Final_redhat_00001.1.el8eap` `0:8.1.1-4.GA_redhat_00007.1.el8eap` `0:4.0.10-1.redhat_00001.1.el8eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9	`< 0:1.82.0-1.redhat_00001.1.el9eap` `< 0:2.5.0-1.redhat_00001.1.el9eap` `< 0:5.0.12-1.Final_redhat_00001.1.el9eap` `< 0:8.1.1-4.GA_redhat_00007.1.el9eap`	`0:1.82.0-1.redhat_00001.1.el9eap` `0:2.5.0-1.redhat_00001.1.el9eap` `0:5.0.12-1.Final_redhat_00001.1.el9eap` `0:8.1.1-4.GA_redhat_00007.1.el9eap`

Vendors and products

Affected operating systems

Affected operating systems

Linux	redhat	enterprise_linux	`8.0`
Linux	redhat	enterprise_linux	`9.0`

Weakness classes (CWE)

CWE-770Allocation of Resources Without Limits or Throttling
Base
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Entry at MITRE CWE-770

References & sources

NVD (NIST)vuln/detail/CVE-2025-9784advisory
github.comundertow-io/undertow/pull/1805web
github.comundertow-io/undertow/pull/1804web
github.comundertow-io/undertow/pull/1803web
github.comundertow-io/undertow/pull/1802web
github.comundertow-io/undertow/pull/1778web
kb.cert.orgvuls/id/767506web
kb.cert.orgvuls/id/767506web
issues.redhat.combrowse/UNDERTOW-2598web
github.comundertow-io/undertow/releases/tag/2.2.38.Finalweb
github.comundertow-io/undertowpackage
bugzilla.redhat.comRHBZ#2392306web, Issue tracking, x_refsource_REDHAT
access.redhat.comsecurity/cve/CVE-2025-9784web, Vulnerability database, x_refsource_REDHAT
access.redhat.comRHSA-2026:4924web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:4917web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:4916web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:4915web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:3892web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:3891web, Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2026:3889web, Vendor advisory, x_refsource_REDHAT

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

14.10.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/9xxx/CVE-2025-9784.json">CVE-2025-9784</a>

Source identifier: secalert@redhat.com

06.10.2026Record modifiedRed Hat

New references:

https://access.redhat.com/errata/RHSA-2026:76128

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/9xxx/CVE-2025-9784.json">CVE-2025-9784</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:76128

Source identifier: secalert@redhat.com

06.10.2026Record modifiedRed Hat

New references:

Show 3 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/9xxx/CVE-2025-9784.json">CVE-2025-9784</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:76129
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:76130

Source identifier: secalert@redhat.com

06.10.2026Record modifiedRed Hat

New references:

Show 3 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/9xxx/CVE-2025-9784.json">CVE-2025-9784</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:76132
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:76134

Source identifier: secalert@redhat.com

04.09.2026Record modifiedRed Hat

New references:

and 8 more references

Show 41 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/9xxx/CVE-2025-9784.json">CVE-2025-9784</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2025:23143
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:0383
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:0384
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:0386
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:33371
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:33372
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:3889
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:3891
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:3892
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:4915
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:4916
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:4917
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:4924
Reference	added	—	https://access.redhat.com/security/cve/CVE-2025-9784
Reference	added	—	https://bugzilla.redhat.com/show_bug.cgi?id=2392306
Reference	added	—	https://github.com/undertow-io/undertow/pull/1778
Reference	added	—	https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final
Reference	added	—	https://issues.redhat.com/browse/UNDERTOW-2598
Reference	added	—	https://kb.cert.org/vuls/id/767506
Reference	removed	https://access.redhat.com/errata/RHSA-2025:23143	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:0383	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:0384	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:0386	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:33371	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:33372	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:3889	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:3891	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:3892	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:4915	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:4916	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:4917	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:4924	—
Reference	removed	https://access.redhat.com/security/cve/CVE-2025-9784	—
Reference	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2392306	—
Reference	removed	https://github.com/undertow-io/undertow/pull/1778	—
Reference	removed	https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final	—
Reference	removed	https://issues.redhat.com/browse/UNDERTOW-2598	—
Reference	removed	https://kb.cert.org/vuls/id/767506	—
Reference type	removed	https://access.redhat.com/security/cve/CVE-2025-9784 Types: Vendor Advisory	—
Reference type	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2392306 Types: Issue Tracking	—

Source identifier: secalert@redhat.com

Show 3 older changes

04.09.2026Record modifiedCVE Program
New references:
- https://www.kb.cert.org/vuls/id/767506
Show 2 original changes
Individual changes of this event as published by NVD
Type Action Before After
Reference added
—
https://www.kb.cert.org/vuls/id/767506
Reference removed
https://www.kb.cert.org/vuls/id/767506
—
Source identifier: af854a3a-2127-422b-91ae-364da2661108

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://www.kb.cert.org/vuls/id/767506
Reference	removed	https://www.kb.cert.org/vuls/id/767506	—

27.07.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	changed	…, Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8, Red Hat JBoss Enterprise Application Platform (+60)	…, Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8, Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 (+59)

Source identifier: secalert@redhat.com

24.07.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	changed	…, Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8, Red Hat JBoss Enterprise Application Platform (+60)	…, Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8, Red Hat JBoss Enterprise Application Platform (+60)

Source identifier: secalert@redhat.com

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