High 8.8

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux…

CVE-2025-11561 First seen on SecPulse Oct 9, 2025

Summary

Vulnerability reported (CVE-2025-11561). Successful exploitation can lead to full system takeover.

AI summary

Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.

A vulnerability tracked as CVE-2025-11561 has been found.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2025-11561" on the vendor's site.

CVE-2025-11561 — CWE-269 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

What is the problem

A vulnerability (CWE-269) has been reported.

Affected scope

Check the vendor advisory for the affected versions.

Severity

Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.

How to fix

Update to the patched release per vendor advisory.

Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposureidentify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
2
Post-deployment verificationverify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Ecosystem	Package	Affected → Fixed	Fixed
sssd.io	sssd.iosssd	≤ 2.11.1→ Not listed	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 10	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.4 Extended Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.6 Extended Update Support	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.12	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.13	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.14	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.15	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.16	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.17	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.18	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.19	—	Not listed
Red Hat	Red HatRed Hat OpenShift Container Platform 4.20	—	Not listed
Red Hat	Red HatRed Hat Ceph Storage 7	—	Not listed
Red Hat	Red HatRed Hat Ceph Storage 8	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 6	—	Not listed

This record does not list fixed versions. Check the article or the vendor advisory in the references for whether and where it is fixed.

Fix status by distribution

Records published by each distribution for this CVE. Fixed versions differ by release; check each link.

Debian DEBIAN-CVE-2025-11561 sssd Fix available
Ubuntu UBUNTU-CVE-2025-11561 sssd No fixed version in this record

Original description The description as published by the source.

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

Source: NIST National Vulnerability Database NVD

Summary

AI summary

Response actions

Affected packages

Fix status by distribution

References