What’s Vulnerable › Vulnerabilities

CVE-2020-18778

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-23 · updated 2026-06-17
• Weakness: CWE-125

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.

Affected products

• libav: 12.3

References

• https://bugzilla.libav.org/show_bug.cgi?id=1155
• https://cwe.mitre.org/data/definitions/126.html
• https://bugzilla.libav.org/show_bug.cgi?id=1155
• https://cwe.mitre.org/data/definitions/126.html

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