Medium severity · published Feb 18, 2026
CVE-2025-12343
Ffmpeg: double-free vulnerability in ffmpeg tensorflow dnn backend
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FF
Ffmpeg · Ffmpeg
6.1 before 8.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12343
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12343
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-12343
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2406533
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