CVE-2021-20319: Red Hat Coreos-Installer

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.

Affected products

• Red Hat Coreos-Installer: before 0.10.1 (fixed in 0.10.1)

Published 2022-03-04. Last modified 2026-06-17.