CVE-2026-20889: Libraw

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• Libraw Libraw: version 0.22.0 only

Published 2026-04-07. Last modified 2026-07-15.