VideoLAN VLC Media Player up to 3.0.23 RTSP Access access.c RtspReadLine heap-based overflow

Summaryinfo

A vulnerability, which was classified as problematic, has been found in VideoLAN VLC Media Player up to 3.0.23. Impacted is the function RtspReadLine of the file modules/access/rtsp/access.c of the component RTSP Access. Performing a manipulation results in heap-based overflow. This vulnerability was named CVE-2026-73324. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in VideoLAN VLC Media Player up to 3.0.23. It has been classified as problematic. This affects the function RtspReadLine of the file modules/access/rtsp/access.c of the component RTSP Access. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality. The summary by CVE is:

Certain VLC media player builds in versions 3.0.0 through 3.0.23 contain a memory-safety vulnerability reachable when processing media from an attacker-controlled network source. Exploitation requires user interaction and may disclose a limited, layout-dependent amount of VLC process memory. Exposure depends on build configuration.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-73324 since 08/11/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 3.0.24 eliminates this vulnerability.

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Productinfo

Type

• Multimedia Player Software

Vendor

• VideoLAN

Name

• VLC Media Player

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18
• 3.0.19
• 3.0.20
• 3.0.21
• 3.0.22
• 3.0.23

License

• open-source

Website

• Vendor: https://www.videolan.org/

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