CVE-2025-8585: libav DSS File Demuxer avconv.c main double free

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-05 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability, which was classified as critical, has been found in libav up to 12.3. Affected by this issue is the function main of the file /avtools/avconv.c of the component DSS File Demuxer. The manipulation leads to double free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The bug was initially reported by the researcher to the wrong project. This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

libav: through 12.3

References

https://drive.google.com/file/d/1I4VVXGys156UdeSTgya_GGxLZxwuxUPw/view?usp=sharing
https://trac.ffmpeg.org/ticket/11680
https://vuldb.com/?ctiid.318818
https://vuldb.com/?id.318818
https://vuldb.com/?submit.621825
https://trac.ffmpeg.org/ticket/11680
https://vuldb.com/?submit.621825

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