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Vulnerability record · CVE-2020-26664 · published 8 January 2021

CVE-2020-26664: Videolan vlc media player out-of-bounds write vulnerability

Videolan · Vlc Media Player

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.

7.8 CVSS 3.1 High EPSS 1.5% · top 26.6% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score, v2 6.8
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
8 Oct 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.githubusercontent.com/henices/db11664dd45b9f322f8514d182aef5ea/raw/d56940c8bf211992bf4f3309a85bb2b69383e511 ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00012.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202101-37 Third Party Advisory
https://www.debian.org/security/2021/dsa-4834 Third Party Advisory
https://gist.githubusercontent.com/henices/db11664dd45b9f322f8514d182aef5ea/raw/d56940c8bf211992bf4f3309a85bb2b69383e511 ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00012.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202101-37 Third Party Advisory
https://www.debian.org/security/2021/dsa-4834 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-26664), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.