CVE-2026-12610
Last modified
CVE-2026-12610 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. EPSS estimates a 0.12% chance of exploitation in the next 30 days.
Description
A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fedoraproject | Sssd | All versions |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
References
- https://access.redhat.com/security/cve/CVE-2026-12610Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288Vendor Advisory
- https://github.com/SSSD/sssd/issues/8796Issue Tracking, Mitigation
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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