CVE-2025-12343 LOW

CVE-2025-12343: Ffmpeg: double-free vulnerability in ffmpeg tensorflow dnn backend

Weakness CWE-415
Published February 18, 2026
Last update February 25, 2026

CVSS base score

3.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

A flaw was found in FFmpeg’s TensorFlow backend within the libavfilter/dnn_backend_tf.c source file. The issue occurs in the dnn_execute_model_tf() function, where a task object is freed multiple times in certain error-handling paths. This redundant memory deallocation can lead to a double-free condition, potentially causing FFmpeg or any application using it to crash when processing TensorFlow-based DNN models. This results in a denial-of-service scenario but does not allow arbitrary code execution under normal conditions.

Key dates

02Disclosure timeline

February 18, 2026 CVE published
February 25, 2026 Record updated