Medium severity6.5NVD Advisory· Published Aug 23, 2021· Updated Jun 17, 2026

CVE-2020-18778

Description

In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_p_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Libav/Libav2 versions
cpe:2.3:a:libav:libav:12.3:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:libav:libav:12.3:*:*:*:*:*:*:*
- (no CPE)range: 12.3
Libav/Libavdescription

Patches

Vulnerability mechanics

References

bugzilla.libav.org/show_bug.cginvdBroken LinkExploitIssue TrackingThird Party Advisory
cwe.mitre.org/data/definitions/126.htmlnvdTechnical Description

News mentions

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cvss	0.423
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000