What is CVE-2026-16460?

CVE-2026-16460 is a high-severity vulnerability in Red Hat Hardened Images, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.4/10. Published 2026-10-19.

How severe is CVE-2026-16460?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Red Hat Hardened Images

CVE-2026-16460

A flaw was found in bootc and ostree. Already-staged deployments are finalized without revalidating the deployment's container image against the current containers signature policy. Unsigned OS content staged under a prior permissive policy can remain bootable after policy is hardened to reject unsigned images, leading to full host compromise on reboot.

Published 2026-10-19 · last modified 2026-10-19.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Red Hat Hardened Images

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

access.redhat.com/security/cve/CVE-2026-16460 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-16460?: CVE-2026-16460 is a high-severity vulnerability in Red Hat Hardened Images, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.4/10. Published 2026-10-19.
How severe is CVE-2026-16460?: High severity. CVSS v3 base score is 7.4 out of 10.