GStreamer VMnc Decoder integer overflow

Summaryinfo

A vulnerability was found in GStreamer and classified as critical. Affected by this vulnerability is an unknown functionality of the component VMnc Decoder. Such manipulation leads to integer overflow. This vulnerability is listed as CVE-2026-52722. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in GStreamer (the affected version is unknown) and classified as critical. Affected by this issue is an unknown code of the component VMnc Decoder. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A signed integer overflow vulnerability was found in GStreamer's VMnc decoder. A crafted VMnc stream with large cursor dimensions can overflow signed integer payload-size arithmetic, bypassing a length check and leading to out-of-bounds reads. A remote attacker could trick a user into opening a specially crafted VMnc file, potentially causing a crash or information disclosure.

The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2026-52722 since 06/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/16/2026).

The vulnerability scanner Nessus provides a plugin with the ID 321139 (Linux Distros Unpatched Vulnerability : CVE-2026-52722), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (321139). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Multimedia Processing Software

Name

• GStreamer

License

• open-source

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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