CVE-2025-59731 - CVE House
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Status published Medium CVE-2025-59731

Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress

Vulnerability Description

When decoding an OpenEXR file that uses DWAA or DWAB compression, the specified raw length of run-length-encoded data is not checked when using it to calculate the output data. We read rle_raw_size from the input file at [0], we decompress and decode into the buffer td->rle_raw_data of size rle_raw_size at [1], and then at [2] we will access entries in this buffer up to (td->xsize - 1) * (td->ysize - 1) + rle_raw_size / 2, which may exceed rle_raw_size. We recommend upgrading to version 8.0 or beyond.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Google Big Sleep

References

More from FFmpeg

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CVE-2025-9951
Remote code execution via Heap Buffer Overflow in FFmpeg JPEG2000
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CVE-2025-59734
Heap-buffer-overflow write in FFmpeg SANM process_ftch
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CVE-2025-59733
Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
High 8.7
CVE-2025-59732
Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
High 8.7
CVE-2025-59730
Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48
Medium 5.7

Affected Vendor

Affected Software

FFmpeg
Vulnerable Versions:
9a32b863074ed4140141e0d3613905c6f1fe61c5, 7.1.1

Timeline

Official Publish: October 6th, 2025
Last Modified: February 26th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-787

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact