FFmpeg up to 9.0.2 OpenEXR decoder libavcodec/exr.c decode_frame integer overflow

Summaryinfo

A vulnerability was found in FFmpeg up to 9.0.2. It has been declared as problematic. This issue affects the function decode_frame of the file libavcodec/exr.c of the component OpenEXR decoder. Such manipulation leads to integer overflow. This vulnerability is referenced as CVE-2026-125100. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in FFmpeg up to 9.0.2. It has been rated as problematic. Affected by this issue is the function decode_frame of the file libavcodec/exr.c of the component OpenEXR 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 occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. Impacted is confidentiality. CVE summarizes:

FFmpeg through 9.0.2 contains an integer overflow vulnerability in the OpenEXR decoder's decode_frame() in libavcodec/exr.c that miscalculates the tiled block count. Attackers can supply a crafted tiled OpenEXR image with large dimensions and small tiles to skip decoding and disclose uninitialized memory or stale frame data.

The advisory is available at code.ffmpeg.org. This vulnerability is handled as CVE-2026-125100 since 11/09/2026. 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. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/09/2026).

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Multimedia Processing Software

Name

• FFmpeg

Version

• 9.0.0
• 9.0.1
• 9.0.2

License

• open-source

Website

• Product: https://ffmpeg.org/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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