High 8.7Published May 12, 2026

CVE-2026-43916pam_authnft: Heap buffer overflow in NETLINK_SOCK_DIAG reply walker

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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It affects identd-ng pam_authnft. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for identd-ng pam_authnft

Exploited in the last 30 days

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: 8.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-125, CWE-191
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

identd-ng pam_authnft identd_ng:pam_authnft (from the name)	before 0.2.0-alpha	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.