CVE-2021-25802 — Out-of-bounds Read in VLC Media Player

CWE-125 — Out-of-bounds ReadCWE-120 — Classic Buffer Overflow8 documents6 sources
Severity
7.1HIGHNVD
EPSS
0.3%
top 48.36%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Videolan VLC Media Player
Timeline
PublishedJul 26
Latest updateAug 13

Description

A buffer overflow vulnerability in the AVI_ExtractSubtitle component of VideoLAN VLC Media Player 3.0.11 allows attackers to cause an out-of-bounds read via a crafted .avi file.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2

Affected Packages2 packages

▶Debianvideolan/vlc_media_player< 3.0.12-1+3

Patches

Patch: code.videolan.org ↗Patch: code.videolan.org ↗

🔴Vulnerability Details

5
OSV
request-tracker5 vulnerabilities↗2025-08-13
▶
OSV
request-tracker4 vulnerabilities↗2023-12-04
▶
GHSA
GHSA-74cj-rxf7-4mmq: A buffer overflow vulnerability in the AVI_ExtractSubtitle component of VideoLAN VLC Media Player 3↗2022-05-24
▶
OSV
CVE-2021-25802: A buffer overflow vulnerability in the AVI_ExtractSubtitle component of VideoLAN VLC Media Player 3↗2021-07-26
▶
CVEList
CVE-2021-25802: A buffer overflow vulnerability in the AVI_ExtractSubtitle component of VideoLAN VLC Media Player 3↗2021-07-26
▶

📋Vendor Advisories

2
Ubuntu
VLC media player vulnerabilities↗2023-06-20
▶
Debian
CVE-2021-25802: vlc - A buffer overflow vulnerability in the AVI_ExtractSubtitle component of VideoLAN...↗2021
▶
CVE-2021-25802 — Out-of-bounds Read in VLC Media Player | cvebase