CVE-2026-43916

HIGH EPSS 17.6%
Published May 12, 20261mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

pam_authnft is a PAM session module binding nftables firewall rules to authenticated sessions via cgroupv2 inodes. Prior to 0.2.0-alpha, a heap buffer over-read in peer_lookup_tcp (src/peer_lookup.c:134, prior to the fix) allowed a crafted NETLINK_SOCK_DIAG reply to slip past the message-size check, then dereference past the end of the allocation. This vulnerability is fixed in 0.2.0-alpha.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
17.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-125 Out-of-bounds Read Memory Safety
CWE-191

References 2

  • github.com https://github.com/identd-ng/pam_authnft/pull/10
  • github.com https://github.com/identd-ng/pam_authnft/security/advisories/GHSA-5jj5-hm34-78vh

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.