CVE-2025-11561 (GCVE-0-2025-11561)

Vulnerability from cvelistv5 – Published: 2025-10-09 13:37 – Updated: 2026-03-19 17:18
VLAI
Title
Sssd: sssd default kerberos configuration allows privilege escalation on ad-joined linux systems
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2025:19610 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19847 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19848 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19849 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19850 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19851 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19852 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19853 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19854 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19859 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:20954 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21020 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21067 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21329 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21795 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22256 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22265 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22277 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22529 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22548 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22724 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:23113 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:0316 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:0677 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-11561 vdb-entryx_refsource_REDHAT
https://blog.async.sg/kerberos-ldr
https://bugzilla.redhat.com/show_bug.cgi?id=2402727 issue-trackingx_refsource_REDHAT
https://github.com/SSSD/sssd/issues/8021
Impacted products
Vendor Product Version
Affected: 0 , ≤ 2.11.1 (semver)
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.10.2-3.el10_0.3 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.0
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.11.1-2.el10_1.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.16.5-10.el7_9.17 , < * (rpm)
    cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.9.4-5.el8_10.3 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::baseos
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support Unaffected: 0:2.2.3-20.el8_2.3 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.2::baseos
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Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:2.4.0-9.el8_4.4 , < * (rpm)
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:2.4.0-9.el8_4.4 , < * (rpm)
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
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Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:2.6.2-4.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_tus:8.6::baseos
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Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:2.6.2-4.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_tus:8.6::baseos
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Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:2.6.2-4.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_tus:8.6::baseos
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Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:2.8.2-4.el8_8.3 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
    cpe:/o:redhat:rhel_tus:8.8::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:2.8.2-4.el8_8.3 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
    cpe:/o:redhat:rhel_tus:8.8::baseos
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.9.7-4.el9_7.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:2.6.2-4.el9_0.4 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:9.0::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:2.8.2-5.el9_2.6 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
    cpe:/o:redhat:rhel_e4s:9.2::baseos
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Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:2.9.4-6.el9_4.4 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.4::crb
    cpe:/a:redhat:rhel_eus:9.4::appstream
    cpe:/o:redhat:rhel_eus:9.4::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.9.6-4.el9_6.3 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.6::baseos
    cpe:/a:redhat:rhel_eus:9.6::crb
    cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat OpenShift Container Platform 4.12 Unaffected: 412.86.202601061735-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.12::el8
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Red Hat Red Hat OpenShift Container Platform 4.13 Unaffected: 413.92.202601130113-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.13::el9
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Red Hat Red Hat OpenShift Container Platform 4.14 Unaffected: 414.92.202511122212-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.14::el9
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Red Hat Red Hat OpenShift Container Platform 4.15 Unaffected: 415.92.202512100122-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.15::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.16 Unaffected: 416.94.202512030118-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.16::el9
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Red Hat Red Hat OpenShift Container Platform 4.17 Unaffected: 417.94.202511260612-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.17::el9
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Red Hat Red Hat OpenShift Container Platform 4.18 Unaffected: 418.94.202511170715-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.18::el9
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Red Hat Red Hat OpenShift Container Platform 4.19 Unaffected: 4.19.9.6.202511252219-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.19::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.20 Unaffected: 4.20.9.6.202511252309-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.20::el9
 Create a notification for this product.
Red Hat Red Hat Ceph Storage 7 Unaffected: sha256:6b79ed10423d954d21dd24c9cb1cf507f6e02c2942ace7fa30cf7af2ffaeb631 , < * (rpm)
    cpe:/a:redhat:ceph_storage:7::el9
 Create a notification for this product.
Red Hat Red Hat Ceph Storage 8 Unaffected: sha256:04a48d31f7336e0d5958eed1ddb1a117148f791baccef4e6e08943181e6794c8 , < * (rpm)
    cpe:/a:redhat:ceph_storage:8::el9
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
Date Public
2025-10-09 00:00
Credits
Red Hat would like to thank Zavier Lee for reporting this issue.
Show details on NVD website
To clipboard 

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\"RHSA-2025:22277\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2025:22529\", \"name\": \"RHSA-2025:22529\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2025:22548\", \"name\": \"RHSA-2025:22548\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2025:22724\", \"name\": \"RHSA-2025:22724\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2025:23113\", \"name\": \"RHSA-2025:23113\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:0316\", \"name\": \"RHSA-2026:0316\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:0677\", \"name\": \"RHSA-2026:0677\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2025-11561\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://blog.async.sg/kerberos-ldr\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2402727\", \"name\": \"RHBZ#2402727\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://github.com/SSSD/sssd/issues/8021\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"To mitigate this issue, ensure the SSSD Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is configured and the an2ln plugin is disabled by adding \\\"disable = an2ln\\\" in a krb5 include file, for example /var/lib/sss/pubconf/krb5.include.d/localauth_plugin and make sure it is included in the Kerberos configuration. Apply vendor updates and follow Red Hat guidance for SSSD hardening.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-269\", \"description\": \"Improper Privilege Management\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-03-19T17:18:09.567Z\"}, \"x_redhatCweChain\": \"CWE-269: Improper Privilege Management\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-11561\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-19T17:18:09.567Z\", \"dateReserved\": \"2025-10-09T13:03:30.189Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2025-10-09T13:37:53.089Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.