Run-Length Encoding Oversight in OpenEXR Files from Vendor Product
CVE-2025-59731

6.9MEDIUM

Key Information:

Vendor

Ffmpeg

Status
Ffmpeg
Vendor
CVE Published:
6 October 2025

What is CVE-2025-59731?

A vulnerability exists in the decoding process of OpenEXR files that utilize DWAA or DWAB compression formats. The system does not adequately verify the specified raw length of run-length-encoded (RLE) data before using it to calculate output data dimensions. This oversight can lead to potential buffer overflows as the application may attempt to access memory beyond the allocated bounds of the RLE data buffer. To mitigate this issue, users are advised to upgrade to version 8.0 or later.

Affected Version(s)

FFmpeg 9a32b863074ed4140141e0d3613905c6f1fe61c5 < 8.0

FFmpeg 7.1.1 < 8.0

References

https://b.corp.google.com/issues/436510153

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Google Big Sleep
JSON
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CVE-2025-59731 : Run-Length Encoding Oversight in OpenEXR Files from Vendor Product