CVE-2026-12610
mediumpriority · track · 0EPSS 0.001 · 2 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/CVE-2026-12610cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288cnnvd
- https://github.com/SSSD/sssd/issues/8796cnnvd
- https://access.redhat.com/security/cve/CVE-2026-12610enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288enisa_euvd
- https://github.com/SSSD/sssd/issues/8796enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-12610MitigationVendor Advisorynvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288Vendor Advisorynvd
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