CVE-2020-27814: Debian Linux

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. An attacker could use this flaw to cause an application crash or in some cases execute arbitrary code with the permission of the user running such an application.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Uclouvain Openjpeg: up to and including 1.5.1; from 2.0.0, before 2.4.0 (fixed in 2.4.0)

Published 2021-01-26. Last modified 2026-06-17.