CVE-2020-18775: Libav

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_b_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.

Affected products

• Libav Libav: version 12.3 only

Published 2021-08-23. Last modified 2026-06-17.