Libxslt: type confusion in xmlnode.psvi between stylesheet and source nodes (CVE-2025-7424)
Published Last modified Sources: BSI, Red Hat, Msrc Update Guide, OSV, CVE.org, Debian LTS, Debian
What is affected, what to do
A flaw was found in the libxslt library. The same memory field, psvi, is used for both stylesheet and input data, which can lead to type confusion during XML transformations.
Update GNOME Libxslt to version 1.1.44, Red Hat Enterprise Linux 10 to version 0:1.1.39-8.el10_0, Red Hat Hardened Images to version 1.1.45-0.1.hum1.
- Affected
- GNOME Libxslt
lt *..1.1.44 - Red Hat Enterprise Linux 10
lt *..0:1.1.39-8.el10_0 - Red Hat Hardened Images
lt *..1.1.45-0.1.hum1
- GNOME Libxslt
- Fixed in
- GNOME Libxslt
1.1.44 - Red Hat Enterprise Linux 10
0:1.1.39-8.el10_0 - Red Hat Hardened Images
1.1.45-0.1.hum1
- GNOME Libxslt
Not sure whether and how you are affected? Ask a question about this vulnerability
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: BSI, Red Hat, Msrc Update Guide, OSV, CVE.org, Debian LTS, Debian
1.3 %
EPSS score
Moderate — model estimates 1-10% exploitation likelihood.
Source: FIRST EPSS, percentile 70.5
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- 86.97 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- 1.3 %
- 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- 70.5
- High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
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
- CISA assessment (SSVC)
- Exploitation: none known · not automatable · Technical impact: partial
- Source: CISA Vulnrichment, as of 10 July 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-843
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 the libxslt library. The same memory field, psvi, is used for both stylesheet and input data, which can lead to type confusion during XML transformations. This vulnerability allows an attacker to crash the application or corrupt memory. In some cases, it may lead to denial of service or unexpected behavior.
Source: BSI CSAF, BSI WID Portal, redhat_csaf, Microsoft Security Update Guide, OSV (Open Source Vulnerabilities), cvelistv5, NVD (NIST), CVE.org (MITRE), Debian LTS Advisories, Debian Security Advisories
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| GNOME | libxslt |
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
|
|
| Red Hat | Red Hat Hardened Images |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
|
|
| redhat | openshift_container_platform |
|
|
| xmlsoft | libxslt |
|
|
| Apple | macOS Sequoia |
|
|
| Apple | macOS Sonoma |
|
|
| Apple | macOS Ventura |
|
|
Vendors and products
- Apple Macos Sequoia
- Apple Macos Sonoma
- Apple Macos Ventura
- Debian Libxslt
- GNOME
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 6
- Red Hat Red Hat Enterprise Linux 7
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Hardened Images
- Red Hat Red Hat Openshift Container Platform 4
Affected operating systems
| Linux | redhat | enterprise_linux | 10.0 |
| Linux | redhat | enterprise_linux | 6.0 |
| Linux | redhat | enterprise_linux | 7.0 |
| Linux | redhat | enterprise_linux | 8.0 |
| Linux | redhat | enterprise_linux | 9.0 |
| Linux | debian | libxslt | bookworm |
| Linux | debian | libxslt | bullseye |
| Linux | debian | libxslt | trixie |
Weakness classes (CWE)
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
Base
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
Entry at MITRE CWE-843
References & sources
- access.redhat.comRHBA-2025:12345Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2026:11015Vendor advisory, x_refsource_REDHAT
- access.redhat.comsecurity/cve/CVE-2025-7424Vulnerability database, x_refsource_REDHAT, Third-party advisory
- bugzilla.redhat.comRHBZ#2379228Issue tracking, x_refsource_REDHAT, Issue tracking, Third-party advisory
- gitlab.gnome.orgGNOME/libxslt/-/issues/139
- seclists.orgfulldisclosure/2025/Aug/0web
- seclists.orgfulldisclosure/2025/Jul/30web
- seclists.orgfulldisclosure/2025/Jul/32web
- seclists.orgfulldisclosure/2025/Jul/33web
- seclists.orgfulldisclosure/2025/Jul/35web
- seclists.orgfulldisclosure/2025/Jul/37web
- openwall.comlists/oss-security/2025/07/11/2web
- lists.debian.orgdebian-lts-announce/2025/09/msg00024.htmlweb
- NVD (NIST)vuln/detail/CVE-2025-7424web
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).
Record 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/2025/7xxx/CVE-2025-7424.json">CVE-2025-7424</a>Source identifier: secalert@redhat.com
Record 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/2025/7xxx/CVE-2025-7424.json">CVE-2025-7424</a>Source identifier: secalert@redhat.com
Record modifiedRed Hat
Show 13 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/2025/7xxx/CVE-2025-7424.json">CVE-2025-7424</a>Reference added —https://access.redhat.com/errata/RHBA-2025:12345Reference added —https://access.redhat.com/errata/RHSA-2026:11015Reference added —https://access.redhat.com/security/cve/CVE-2025-7424Reference added —https://bugzilla.redhat.com/show_bug.cgi?id=2379228Reference added —https://gitlab.gnome.org/GNOME/libxslt/-/issues/139Reference removed https://access.redhat.com/errata/RHBA-2025:12345—Reference removed https://access.redhat.com/errata/RHSA-2026:11015—Reference removed https://access.redhat.com/security/cve/CVE-2025-7424—Reference removed https://bugzilla.redhat.com/show_bug.cgi?id=2379228—Reference removed https://gitlab.gnome.org/GNOME/libxslt/-/issues/139—Reference type removed https://access.redhat.com/security/cve/CVE-2025-7424 Types: Third Party Advisory—Reference type removed https://bugzilla.redhat.com/show_bug.cgi?id=2379228 Types: Issue Tracking, Third Party Advisory—Source identifier: secalert@redhat.com
Record modifiedCVE Program
Show 16 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —http://seclists.org/fulldisclosure/2025/Aug/0Reference added —http://seclists.org/fulldisclosure/2025/Jul/30Reference added —http://seclists.org/fulldisclosure/2025/Jul/32Reference added —http://seclists.org/fulldisclosure/2025/Jul/33Reference added —http://seclists.org/fulldisclosure/2025/Jul/35Reference added —http://seclists.org/fulldisclosure/2025/Jul/37Reference added —http://www.openwall.com/lists/oss-security/2025/07/11/2Reference added —https://lists.debian.org/debian-lts-announce/2025/09/msg00024.htmlReference removed http://seclists.org/fulldisclosure/2025/Aug/0—Reference removed http://seclists.org/fulldisclosure/2025/Jul/30—Reference removed http://seclists.org/fulldisclosure/2025/Jul/32—Reference removed http://seclists.org/fulldisclosure/2025/Jul/33—Reference removed http://seclists.org/fulldisclosure/2025/Jul/35—Reference removed http://seclists.org/fulldisclosure/2025/Jul/37—Reference removed http://www.openwall.com/lists/oss-security/2025/07/11/2—Reference removed https://lists.debian.org/debian-lts-announce/2025/09/msg00024.html—Source identifier: af854a3a-2127-422b-91ae-364da2661108
Record 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 libxslt, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10 (+6)libxslt, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10 (+6)Source identifier: secalert@redhat.com
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<a href="https://intel.neosec.eu/en/cve/CVE-2025-7424"><img src="https://intel.neosec.eu/badge/cve/CVE-2025-7424.svg?lang=en" alt="CVE-2025-7424 – NEOSEC Intel" height="20"></a>