A vulnerability was found in PyTorch 2.6.0+cu124. It has been rated as problematic. Affected by this issue is the function nnq_Sigmoid of the component Quantized Sigmoid Module. The manipulation of the argument scale/zero_point with an unknown input leads to a initialization vulnerability. Using CWE to declare the problem leads to CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. Impacted is integrity.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-2149. The exploitation is known to be difficult. The attack needs to be approached locally. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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• PyTorch

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• 2.6.0+cu124

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Accepted

• Submit #506563: pytorch 2.6.0+cu124 Inconsistency Between Implementation and Documented Design (by Default436352)

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