CVE-2026-125215: Null Dereference (CVSS 4.7)

Description

FFmpeg 7.1 through 9.0.2 contains a NULL pointer dereference vulnerability in ff_dovi_rpu_generate() in libavcodec/dovi_rpuenc.c that allows attackers to crash applications via crafted Dolby Vision RPU metadata. Attackers can supply streams with default or alternating omitted DM blocks to the dovi_rpu bitstream filter with compression enabled, causing denial of service.

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CVSS v3.1 Score

4.7

MEDIUM

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

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-476 CWE-476

References

Other References

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24514 https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25606 https://github.com/FFmpeg/FFmpeg https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/dovi_rpuenc.c#L741 https://github.com/FFmpeg/FFmpeg/commit/11c4b420183cb2d6cd4afaa53de57d400a45e09e https://github.com/FFmpeg/FFmpeg/commit/971ea9d6a2a9ae4c770936f0569cf40720d4c304 https://www.vulncheck.com/advisories/ffmpeg-7.1-through-9.0.2-null-pointer-dereference-via-ff-dovi-rpu-generate

Frequently Asked Questions

What is CVE-2026-125215? +

FFmpeg 7.1 through 9.0.2 contains a NULL pointer dereference vulnerability in ff_dovi_rpu_generate() in libavcodec/dovi_rpuenc.c that allows attackers to crash applications via crafted Dolby Vision RPU metadata. Attackers can supply streams with default or alternating omitted DM blocks to the dovi_rpu bitstream filter with compression enabled, causing denial of service. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2026-125215? +

CVE-2026-125215 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-125215? +

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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