CVE-2025-11561

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-09. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
51.1%
KEV
Not listed

Published

October 9, 2025

Last Modified

April 15, 2026

Advisory Details (10)

Auto-updated May 22, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support.

https://access.redhat.com/errata/RHSA-2025:19859
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:19854
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2025:19853
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2025:19852
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2025:19851
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:19850
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2025:19849
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2025:19848
redhat Patch Available

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2025:19847
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2025:19610

Vendor Advisories for CVE-2025-11561(9)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(24)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhcos-413.92.202601130113-02026-01-22redhat
redhatrhcos-412.86.202601061735-02026-01-15redhat
redhatrhcos-415.92.202512100122-02026-01-07redhat
redhatrhcos-416.94.202512030118-02025-12-10redhat
redhatrhcos-4.20.9.6.202511252309-02025-12-03redhat
redhatrhcos-4.19.9.6.202511252219-02025-12-03redhat
redhatrhcos-417.94.202511260612-02025-12-03redhat
redhatrhceph/rhceph-8-rhel9:82025-12-02redhat
redhatrhceph/rhceph-7-rhel9:72025-12-01redhat
redhatrhcos-418.94.202511170715-02025-11-27redhat
redhatrhcos-414.92.202511122212-02025-11-20redhat
redhatsssd-0:2.9.6-4.el9_6.32025-11-12redhat
redhatsssd-0:2.11.1-2.el10_1.12025-11-11redhat
redhatsssd-0:2.9.7-4.el9_7.12025-11-11redhat
redhatsssd-0:2.6.2-4.el9_0.42025-11-06redhat
redhatsssd-0:2.2.3-20.el8_2.32025-11-06redhat
redhatsssd-0:2.10.2-3.el10_0.32025-11-06redhat
redhatsssd-0:1.16.5-10.el7_9.172025-11-06redhat
redhatsssd-0:2.4.0-9.el8_4.42025-11-06redhat
redhatsssd-0:2.9.4-6.el9_4.42025-11-06redhat
redhatsssd-0:2.6.2-4.el8_6.42025-11-06redhat
redhatsssd-0:2.8.2-4.el8_8.32025-11-06redhat
redhatsssd-0:2.8.2-5.el9_2.62025-11-06redhat
redhatsssd-0:2.9.4-5.el8_10.32025-11-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(15)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 117 total refreshes for this CVE.

  1. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-20 17:07 UTCEPSS rescore
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  20. 2026-07-10 04:53 UTCOSV refresh
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  23. 2026-06-21 01:59 UTCEPSS rescore
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  26. 2026-06-18 17:52 UTCEPSS rescore
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  43. 2026-06-07 15:24 UTCEPSS rescore
  44. 2026-06-06 13:47 UTCEPSS rescore
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  46. 2026-06-05 22:46 UTCEPSS rescore
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  48. 2026-06-05 06:10 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2025-11561?
CVE-2025-11561 is a high vulnerability published on October 9, 2025. 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 (sssdkrb5localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an…
When was CVE-2025-11561 disclosed?
CVE-2025-11561 was first published in the National Vulnerability Database on October 9, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-11561 actively exploited?
CVE-2025-11561 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-11561?
CVE-2025-11561 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-11561?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-11561, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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