CVE-2026-92821 Red Hat CVE debrief

Who should care

System administrators and security teams responsible for managing SSSD configurations, particularly in LDAP environments, should assess exposure and prioritize patching affected systems to prevent potential unauthorized access.

Why it matters

Defenders should care about this vulnerability as it allows for access control bypass in SSSD, potentially leading to unauthorized access. System administrators and security teams managing SSSD in LDAP environments should assess exposure and prioritize patching.

• Potential unauthorized access to protected systems
• Bypass of access control restrictions
• Possible exploitation by remote authenticated users with expired passwords

Technical summary

The flaw in SSSD occurs when evaluating password expiration warnings before restrictive access rules in LDAP environments. An expired-password warning terminates rule evaluation early, treating the access request as successful. This allows a remote authenticated user with an expired password using an alternative authentication method to bypass access control restrictions. Affected system administrators should verify and patch vulnerable SSSD deployments, review configurations, and monitor for exploitation attempts.

Defensive priority

Defenders should prioritize verifying and patching affected systems, particularly those with SSSD configured for LDAP environments, to prevent potential unauthorized access.

Recommended defensive actions

• Verify and apply patches for SSSD on affected systems
• Review and update SSSD configurations to ensure proper evaluation of access rules
• Monitor system logs for potential exploitation attempts
• Perform vulnerability scanning to identify exposed systems
• Implement additional monitoring for authentication events
• Review access control policies for SSSD deployments
• Track and document remediation progress

Evidence notes

The CVE record and source item provide details on the flaw in SSSD, its impact, and affected systems. However, specific version information for affected systems is not provided, requiring further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.