CVE-2020-27843: Debian Linux

Medium severity, CVSS 5.5. EPSS: 1.8% chance of exploitation in the next 30 days.

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 32 only; version 33 only
• Oracle Outside In Technology: version 8.5.5 only
• Uclouvain Openjpeg: before 2.4.0 (fixed in 2.4.0)

Published 2021-01-05. Last modified 2026-06-17.