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CVE-2021-25801

HighPublished

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

Published: Jul 26, 2021
Updated: Aug 3, 2024
Assigning CNA: mitre
Evidence observed: Aug 25, 2026

Primary CVSS

7.1/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

1.5%

Low · next 30 days

Percentile: 73.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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

Sources

VLC_CVE-2021-25801_AnalysisPoC
Technical analysis of CVE-2021-25801 in VLC's AVI parser, demonstrating an out-of-bounds read via crafted sub-index chunks and providing a proof-of-concept.

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