Access Control Vulnerability in SSSD Affects LDAP Environments
CVE-2026-92821

6.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
6 October 2026

What is CVE-2026-92821?

A security flaw in SSSD allows an authenticated user with an expired password to bypass access control restrictions in LDAP environments. When configured to check password expiration warnings before applying restrictive access rules, an expired-password warning can lead to an early termination of rule evaluation, falsely treating an access request as valid. This flaw can be exploited by remote users employing alternative authentication methods, such as SSH public key authentication, potentially granting unauthorized access to protected systems.

References

https://access.redhat.com/security/cve/CVE-2026-92821
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479031
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Found by AISLE in partnership with Red Hat.
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