CVE-2026-68743CWE-125

CVE-2026-68743

Medium · published August 4, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
2.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00133 · 2.6th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-08-04T23:16Z
Affected products (6)
ProductVersionsFixed in
fedoraproject/sssdall versions—
redhat/openshift_container_platformall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (2)
https://access.redhat.com/security/cve/CVE-2026-68743 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2509760 · [email protected]
EPSS history
Timeline
  • 04 AUG 18:37Z
    Sssd: sssd: pam responder out-of-bounds read via unchecked auth_token_length in protocol v1
    cvelistv5