CVE-2026-68743
highA flaw was found in SSSD.
Vendor / product: Fedoraproject — sssd
A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.
CVSS
7.1
7.1 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-08-04 19:16
Modified: 2026-11-05 23:16
NVD status: Analyzed
Last synced 43 minutes ago
Verified against the source API 2026-11-05 23:24 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
fedoraproject / sssd all versions
redhat / openshift_container_platform 4.0
redhat / enterprise_linux 7.0, 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-68743
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2509760
References
- https://access.redhat.com/security/cve/CVE-2026-68743 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2509760 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-05 23:24 UTC · record ↗