CVE-2014-9627

CVE-2014-9627 is a high-severity vulnerability in Videolan Vlc Media Player with a CVSS 3.x base score of 7.8. 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-704.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• CVSS v2: 6.8
• EPSS exploit prediction: 1% (62nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-704
• Affected product: Videolan Vlc Media Player
• Published: 2020-01-24
• Last modified: 2026-06-17

Description

The MP4_ReadBox_String function in modules/demux/mp4/libmp4.c in VideoLAN VLC media player before 2.1.6 performs an incorrect cast operation from a 64-bit integer to a 32-bit integer, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large box size.

Frequently asked questions

What is CVE-2014-9627?

The MP4_ReadBox_String function in modules/demux/mp4/libmp4.c in VideoLAN VLC media player before 2.1.6 performs an incorrect cast operation from a 64-bit integer to a 32-bit integer, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large box size.

How severe is CVE-2014-9627?

CVE-2014-9627 has a CVSS 3.x base score of 7.8, 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 high, and availability high.

Is CVE-2014-9627 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-9627?

CVE-2014-9627 affects Videolan Vlc Media Player. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-9627?

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-2014-9627 published?

CVE-2014-9627 was published on 2020-01-24 and last updated on 2026-06-17.

References

• http://openwall.com/lists/oss-security/2015/01/20/5
• https://github.com/videolan/vlc/commit/2e7c7091a61aa5d07e7997b393d821e91f593c39
• https://www.videolan.org/security/sa1501.html

Affected products (1)

• cpe:2.3:a:videolan:vlc_media_player:*:*:*:*:*:*:*:*

More vulnerabilities in Videolan Vlc Media Player

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• CVE-2017-10699 — Critical (CVSS 9.8): avcodec 2.2.x, as used in VideoLAN VLC media player 2.2.7-x before 2017-06-29, allows out-of-bounds heap memory write…
• 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…

All CVEs affecting Videolan Vlc Media Player →

Other CWE-704 (Incorrect Type Conversion or Cast) vulnerabilities

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• CVE-2025-41646 — Critical (CVSS 9.8): An unauthorized remote attacker can bypass the authentication of the affected software package by misusing an incorrect…
• CVE-2021-33318 — Critical (CVSS 9.8): An Input Validation Vulnerability exists in Joel Christner .NET C# packages WatsonWebserver, IpMatcher 1.0.4.1 and…
• CVE-2020-25576 — Critical (CVSS 9.8): An issue was discovered in the rand_core crate before 0.4.2 for Rust. Casting of byte slices to integer slices…
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