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No exploitation reportedFix available

CVE-2025-11561

Sssd: sssd default kerberos configuration allows privilege escalation on ad-joined linux systems

No exploitation reported by the sources we read.

  • Published2025-10-09
  • WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2025-10-0913:37CVE publishedCNA

Versions per branch

Products declared by the CNA30 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

24 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-04

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libsss_idmapRed Hat:rhel_tus:8.8::baseosall versions · fixed in 0:2.8.2-4.el8_8.3
  • python3-sssdconfigAlmaLinux:10all versions · fixed in 2.11.1-2.el10_1.1
  • sssdTuxCare:OracleLinux:7all versions · fixed in 1.16.5-10.0.3.el7_9.16.tuxcare.els1and 33 other packages
  • sssdTuxCare:CentOS:7all versions · fixed in 1.16.5-10.0.3.el7_9.16.tuxcare.els1and 33 other packages
  • sssdTuxCare:AlmaLinux:9.6all versions · fixed in 2.9.6-4.el9_6.2.tuxcare.els1and 34 other packages
  • sssdTuxCare:AlmaLinux:9.2all versions · fixed in 2.8.2-3.el9_2.alma.tuxcare.els2and 33 other packages
  • sssdSUSE:Manager Server LTS 4.3all versions · fixed in 2.5.2-150400.4.40.1
  • sssdSUSE:Manager Proxy LTS 4.3all versions · fixed in 2.5.2-150400.4.40.1

59 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-11561 Red Hat Product Security4,895 products fixed · 31 known affected

    sssd: SSSD default Kerberos configuration allows privilege escalation on AD-joined Linux systems

    libipa_hbac as a component of Red Hat Enterprise Linux 6 · libipa_hbac-devel as a component of Red Hat Enterprise Linux 6 · libipa_hbac-python as a component of Red Hat Enterprise Linux 6 · +28 more

  • RHSA-2026:0677 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.13.63 bug fix and security update

  • RHSA-2026:0316 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.12.84 bug fix and security update

  • RHSA-2025:23113 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.15.60 bug fix and security update

  • RHSA-2025:22724 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.16.54 bug fix and security update

  • RHSA-2025:22277 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.19.20 bug fix and security update

19 more advisories

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2026:0677 · 1 productFor OpenShift Container Platform 4.13 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
  2. Vendor fix Red Hat Product Security RHSA-2026:0316 · 1 productFor OpenShift Container Platform 4.12 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
  3. Vendor fix Red Hat Product Security RHSA-2025:23113 · 4 productsFor OpenShift Container Platform 4.15 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
  4. Vendor fix Red Hat Product Security RHSA-2025:22724 · 4 productsFor OpenShift Container Platform 4.16 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
  5. Vendor fix Red Hat Product Security RHSA-2025:22277 · 4 productsFor OpenShift Container Platform 4.19 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
  6. Vendor fix Red Hat Product Security RHSA-2025:22265 · 4 productsFor OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2025-10-09
Last Modified
2026-11-04
NVD status
Deferred
GitHub Advisory
GHSA-gj84-8vfx-q3vm

Frequently asked questions

What is CVE-2025-11561?

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.

Is CVE-2025-11561 actively exploited?

Active exploitation of CVE-2025-11561 has not been confirmed. Its EPSS score was 0.8% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-11561?

CVE-2025-11561 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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