CVE-2025-32434: PyTorch: `torch.load` with `weights_only=True` leads to remote code execution
Description I found a Remote Command Execution (RCE) vulnerability in PyTorch. When loading model using torch.load with weightsonly=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 weightsonly=True to be safe.
Published Apr 18, 2025 · Updated Aug 29, 2025
Affected packages
torch
- Ecosystem
- PyPI
- Affected
- < 2.6.0
- Fixed in
- 2.6.0
- Check
pip show torch
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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. image 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.
Credited to azraelxuemo, sniten.
References
- https://github.com/pytorch/pytorch/security/advisories/GHSA-53q9-r3pm-6pq6
- https://github.com/pytorch/pytorch/commit/8d4b8a920a2172523deb95bf20e8e52d50649c04
- https://nvd.nist.gov/vuln/detail/CVE-2025-32434
- https://github.com/pypa/advisory-database/tree/main/vulns/torch/PYSEC-2025-41.yaml
- https://github.com/advisories/GHSA-53q9-r3pm-6pq6
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology