Deserialization of Untrusted Data in PyTorch - CVE-2025-32434
Published: May 21, 2025 / Updated: April 23, 2026
Vulnerability identifier: #VU109603
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2025-32434
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: pytorch
Affected software:
PyTorch
PyTorch
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data when loading a model using torch.load with weights_only=True. A remote attacker can trick the victim into loading a specially crafted model and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2025-32434
Install updates from vendor's website.