CriticalCVE-2026-120017

Missing Authentication in SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) (CVE-2026-120017)

Published 10.11.2026Last modified 11.11.2026Sources: CVE.org, EUVD, SAP Note, BSI

What is affected, what to do

The available sources name no fixed version. Check the vendor guidance in the references below.

Affected: SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 702..SAP_BASIS 702
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 731..SAP_BASIS 731
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 740..SAP_BASIS 740
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 750..SAP_BASIS 750
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 751..SAP_BASIS 751
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 752..SAP_BASIS 752
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 753..SAP_BASIS 753
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 754..SAP_BASIS 754
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 755..SAP_BASIS 755
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 756..SAP_BASIS 756
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 757..SAP_BASIS 757
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 758..SAP_BASIS 758
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 816..SAP_BASIS 816
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 920..SAP_BASIS 920
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 921..SAP_BASIS 921
SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider) eq SAP_BASIS 922..SAP_BASIS 922

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Metrics

10.0

XIEM Effective CVSS

Highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

10.0

CVSS v3

Severity Critical on the scale from 0 to 10.

Source: CVE.org, EUVD, SAP Note, BSI

0.3 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 17.7

Show all metrics

Severity: Critical
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: 82.51 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: 10.0 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: 10.0
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: 0.3 %; Low — model estimates < 1% 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: 17.7; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
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: 10.11.2026
CISA assessment (SSVC): Exploitation: none known · automatable · Technical impact: total; Source: CISA Vulnrichment, as of 10 November 2026
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-347

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

SAP NetWeaver AS ABAP and ABAP Platform does not perform sufficient verification of incoming authentication assertions under certain configurations. An unauthenticated attacker could submit specially crafted data to bypass authentication and impersonate arbitrary users, including privileged accounts. Successful exploitation could cause a full system compromise, with the impact potentially extending to connected components and systems beyond the affected system. This results in a high impact on confidentiality, integrity, and availability of the application.

Source: cvelistv5, ENISA EUVD, NVD (NIST), sap_note, 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
SAP_SE	SAP NetWeaver AS ABAP and ABAP Platform (SAML2 Service Provider)	`SAP_BASIS 756` `SAP_BASIS 758` `SAP_BASIS 920` `SAP_BASIS 922` `SAP_BASIS 750` `SAP_BASIS 757` `SAP_BASIS 702` `SAP_BASIS 751` `SAP_BASIS 740` `SAP_BASIS 754` `SAP_BASIS 753` `SAP_BASIS 921` `SAP_BASIS 816` `SAP_BASIS 731` `SAP_BASIS 755` `SAP_BASIS 752`	— — — — — — — — — — — — — — — —
SAP	Software	`Start Service` `ABAP Developer Tools` `Business Objects` `Internet Communication Manager` `NetWeaver Visual Composer` `NetWeaver Application Server Java` `WebClient UI` `NetWeaver AS ABAP` `S4CRM` `NetWeaver Process Integration` `Web Dispatcher` `NetWeaver Knowledge Management` `BusinessObjects Business Intelligence Platform` `Microsoft Management Console` `NetWeaver Enterprise Portal` `Cloud SDK for Python` `Gateway` `Host Agent` `Solution Tools Plug-In` `Cloud SDK for AI(JavaScript)`	— — — — — — — — — — — — — — — — — — — —

Vendors and products

Weakness classes (CWE)

CWE-347Improper Verification of Cryptographic Signature
Base
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Entry at MITRE CWE-347

References & sources

me.sap.comnotes/3849308euvd
url.sapsapsecuritypatchdayeuvd

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).

11.11.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: none known, automatable: yes

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	removed	{"id":"CVE-2026-120017","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-11-10T19:37:32.867647Z"}	—
SSVC assessment	added	—	{"id":"CVE-2026-120017","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-11-10T00:00:00+00:00"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

10.11.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: none known, automatable: yes

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	added	—	{"id":"CVE-2026-120017","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-11-10T19:37:32.867647Z"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

10.11.2026Receivedsap.com

CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness type: CWE-347

Description added or changed

New references:

Show 6 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Description	added	—	SAP NetWeaver AS ABAP and ABAP Platform does not perform sufficient verification of incoming authentication assertions under certain configurations. An unauthenticated attacker could submit specially crafted data to bypass authentication and impersonate arbitrary users, including privileged accounts. Successful exploitation could cause a full system compromise, with the impact potentially extending to connected components and systems beyond the affected system. This results in a high impact on confidentiality, integrity, and availability of the application.
CVSS	added	—	AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness type (CWE)	added	—	CWE-347
Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/120xxx/CVE-2026-120017.json">CVE-2026-120017</a>
Reference	added	—	https://me.sap.com/notes/3849308
Reference	added	—	https://url.sap/sapsecuritypatchday

Source identifier: cna@sap.com

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<a href="https://intel.neosec.eu/en/cve/CVE-2026-120017"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-120017.svg?lang=en" alt="CVE-2026-120017 – NEOSEC Intel" height="20"></a>