VULNERABILITY INTELLIGENCE

CVE-2026-12610

CVSS score6.4 MEDIUM
EPSS probability0.12%
CISA KEVNot currently listed
Published2026-06-30
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-825

Primary references