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CVE-2026-123876VulnerabilityPublished

Microsoft · Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-123876· Medium 4.4

Not known to be exploited · CVSS 4.4 Medium.

Data as of 11 Nov 2026, 09:47 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10containers-commonAffected–Fixed in–
Red Hat Enterprise Linux 8container-tools:rhel8/containers-commonAffected–Fixed in–
Red Hat Enterprise Linux 9containers-commonAffected–Fixed in–
Red Hat Hardened Imagescontainers-commonAffected–Fixed in–
Red Hat Hardened ImagespodmanAffected–Fixed in–
Red Hat Hardened ImagesskopeoAffected–Fixed in–

AI-suggested

Users should monitor Microsoft Security Response Center advisories for updates. Until a fix is available, consider restricting use of affected versions on 32-bit systems or applying additional container security controls.

Description

CVE-2026-123876 is a vulnerability in Podman containers-common version 3.0 involving default seccomp rules that deny af_vsock and netlink_audit. These deny rules can be bypassed on 32-bit systems, potentially allowing unintended access or actions.

References

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