CVE-2026-68743

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.

• CWE-125

• https://access.redhat.com/security/cve/CVE-2026-68743Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2509760Issue Tracking, Vendor Advisory

Published

Aug 4, 2026

Last Modified

Aug 31, 2026

Status

Analyzed

• 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.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-6870GSM RP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 …5.5
• CVE-2026-6871Improper Neutralization of Input During Web Page Generation …6.1
• CVE-2026-6872Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
• CVE-2026-6873An issue was discovered in Django 6.0 before 6.0.6 and 5.2 b…4.3
• CVE-2026-6874A vulnerability was determined in ericc-ch copilot-api up to…4.3
• CVE-2026-68742A flaw was found in SSSD. The sss_nss_protocol_parse_addr() …5.5
• CVE-2026-68744A flaw was found in SSSD. The sss_nss_protocol_fill_initgr()…3.3
• CVE-2026-68745Certificate validation failures in SAML authentication in Ap…8.1
• CVE-2026-68746Not Failing Securely ('Failing Open') vulnerability in liveb…8.8
• CVE-2026-68747Improper Neutralization of Special Elements in Output Used b…6.1
• CVE-2026-68749Inefficient Regular Expression Complexity vulnerability in t…7.5
• CVE-2026-6875ServiceNow has addressed a remote code execution vulnerabili…9.5