What’s Vulnerable › Vulnerabilities

CVE-2020-26664

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-08 · updated 2026-10-08
• Weakness: CWE-787

Description

A vulnerability in EbmlTypeDispatcher::send in VideoLAN VLC media player 3.0.11 allows attackers to trigger a heap-based buffer overflow via a crafted .mkv file.

Affected products

• Debian Linux: 9.0, 10.0
• VideoLAN VLC: before 3.0.12 — fixed in 3.0.12

How to fix

Upgrade to a fixed version: VideoLAN VLC 3.0.12. Check the vendor advisory for mitigations.

References

• https://gist.githubusercontent.com/henices/db11664dd45b9f322f8514d182aef5ea/raw/d56940c8bf211992bf4f3309a85bb2b69383e511/CVE-2020-26664.txt
• https://lists.debian.org/debian-lts-announce/2022/06/msg00012.html
• https://security.gentoo.org/glsa/202101-37
• https://www.debian.org/security/2021/dsa-4834
• https://gist.githubusercontent.com/henices/db11664dd45b9f322f8514d182aef5ea/raw/d56940c8bf211992bf4f3309a85bb2b69383e511/CVE-2020-26664.txt
• https://lists.debian.org/debian-lts-announce/2022/06/msg00012.html
• https://security.gentoo.org/glsa/202101-37
• https://www.debian.org/security/2021/dsa-4834

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