Use-After-Free Vulnerability in SANM Decoding in Vendor Product
CVE-2025-59734

8.7HIGH

Key Information:

Vendor

Ffmpeg

Status
Vendor
CVE Published:
6 October 2025

What is CVE-2025-59734?

A vulnerability in the SANM decoding process allows for potential use-after-free write issues when handling animations in Vendor Product versions below 8.0. When a STOR chunk is present, subsequent FOBJ chunks can cause the code to reference frames with invalid sizes, leading to improper buffer handling. This results in a scenario where the memory allocated for a previously freed buffer is accessed, which could lead to data corruption and unexpected behaviors. To mitigate risks, it is crucial to upgrade to version 8.0 or higher.

Affected Version(s)

FFmpeg 4d7c609be37dc57d31527c8c9e5945dc9491a7cd < 8.0

FFmpeg 7.1.1 < 8.0

References

CVSS V4

Score:
8.7
Severity:
HIGH
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
.
CVE-2025-59734 : Use-After-Free Vulnerability in SANM Decoding in Vendor Product