CVE-2026-53005: af_unix: Drop all SCM attributes for SOCKMAP.

highCVSS 7.8CVE-2026-53005

CSIRTS triage

Other

What: This vulnerability involves dropping all SCM attributes for SOCKMAP.
Who is affected: Deployments using the af_unix socket.
Urgency: Remediation is urgent due to the high severity rating of 7.8.
Action: Apply relevant patches as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53005

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-530050.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53005	coverage & exploitation status	NVD · CVE.org

Recent advisories for af_unix

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-53361: In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progres…nvd · 2026-07-04
mediumCVE-2026-53361: af_unix: Set gc_in_progress to true in unix_gc().msrc · 2026-07-02
mediumCVE-2026-53035: bpf, sockmap: Fix af_unix iter deadlockmsrc · 2026-06-09
mediumCVE-2026-52928: af_unix: Reject SIOCATMARK on non-stream socketsmsrc · 2026-06-09
highCVE-2026-53034: bpf, sockmap: Fix af_unix null-ptr-deref in proto updatemsrc · 2026-06-09