CVE-2025-8585: libav Buffer Overflow — Exploit

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.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-415 CWE-415

Affected Products

Vendor	Product	Versions
libav	libav	< 12.3

References

Exploits

https://drive.google.com/file/d/1I4VVXGys156UdeSTgya_GGxLZxwuxUPw/view?usp=sharing https://trac.ffmpeg.org/ticket/11680 https://trac.ffmpeg.org/ticket/11680

Other References

https://vuldb.com/?ctiid.318818 https://vuldb.com/?id.318818 https://vuldb.com/?submit.621825 https://vuldb.com/?submit.621825

Frequently Asked Questions

What is CVE-2025-8585? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-8585? +

CVE-2025-8585 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-8585? +

CVE-2025-8585 affects products from libav, specifically: libav. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8585? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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