CVE-2021-25803
CVE-2021-25803 is a high-severity vulnerability in Videolan Vlc Media Player with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.
Key facts
- Severity: High (CVSS 3.x base score 7.1)
- CVSS v2: 5.8
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-190
- Affected product: Videolan Vlc Media Player
- Published:
- Last modified:
Description
A buffer overflow vulnerability in the vlc_input_attachment_New component of VideoLAN VLC Media Player 3.0.11 allows attackers to cause an out-of-bounds read via a crafted .avi file.
Frequently asked questions
- What is CVE-2021-25803?
- A buffer overflow vulnerability in the vlc_input_attachment_New component of VideoLAN VLC Media Player 3.0.11 allows attackers to cause an out-of-bounds read via a crafted .avi file.
- How severe is CVE-2021-25803?
- CVE-2021-25803 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2021-25803 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-25803?
- CVE-2021-25803 affects Videolan Vlc Media Player. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-25803?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-25803 published?
- CVE-2021-25803 was published on 2021-07-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:videolan:vlc_media_player:3.0.11:*:*:*:*:*:*:*
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- CVE-2016-5108 — Critical (CVSS 9.8): Buffer overflow in the DecodeAdpcmImaQT function in modules/codec/adpcm.c in VideoLAN VLC media player before 2.2.4…
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- CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
- CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…
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