GitHub Advisoryadvisory · PyPI
GHSA-53q9-r3pm-6pq6 PyTorch: `torch.load` with `weights_only=True` leads to remote code execution
CRITICAL
Official page ↗
- Aliases
- CVE-2025-32434
- Ecosystem
- PyPI
- Packages
- torch
- Severity
- Critical
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- CWE-502
- Reviewed
- 2025-04-18
Affected packages
• PyPI torch: < 2.6.0 → fixed in 2.6.0
Description
Description
I found a Remote Command Execution (RCE) vulnerability in PyTorch. When loading model using torch.load with weights_only=True, it can still achieve RCE.
Background knowledge
https://github.com/pytorch/pytorch/security
As you can see, the PyTorch official documentation considers using `torch.load()` with `weights_only=True` to be safe.
Since everyone knows that weights_only=False is unsafe, so they will use the weights_only=True to mitigate the seucirty issue.
But now, I just proved that even if you use weights_only=True, it can still achieve RCE.
Credit
This vulnerability was found by Ji'an Zhou.
Related
Alias · CVE (1)
- CVE-2025-32434 PyTorch is a Python package that provides tensor computation with strong GPU acceleration and deep neural networks built on a tape-based… vulnerability
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- https://github.com/pytorch/pytorch/security/advisories/GHSA-53q9-r3pm-6pq6 web
- https://nvd.nist.gov/vuln/detail/CVE-2025-32434 advisory
- https://github.com/pytorch/pytorch/commit/8d4b8a920a2172523deb95bf20e8e52d50649c04 web
- https://github.com/pypa/advisory-database/tree/main/vulns/torch/PYSEC-2025-41.yaml web
- https://github.com/pytorch/pytorch package