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Vulnerability · Published Apr 16, 2025 · Assigned by VulDB

CVE-2025-3730PyTorch LossCTC.cpp torch.nn.functional.ctc_loss denial of service

Low 3.3

In plain English

A low-severity security flaw in PyTorch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.3%top 73.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability, which was classified as problematic, was found in PyTorch 2.6.0. Affected is the function torch.nn.functional.ctc_loss of the file aten/src/ATen/native/LossCTC.cpp. The manipulation leads to denial of service. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The name of the patch is 46fc5d8e360127361211cb237d5f9eef0223e567. It is recommended to apply a patch to fix this issue. The security policy of the project warns to use unknown models which might establish malicious effects.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12pytorchno fix listedDEBIAN-CVE-2025-3730
Debian:13pytorchno fix listedDEBIAN-CVE-2025-3730
Debian:14pytorch2.12.0+dfsg2-1DEBIAN-CVE-2025-3730
PyPItorch2.8.0GHSA-887c-mr87-cxwp
PyPItorch2.8.0PYSEC-2026-1970
Ubuntu:22.04:LTSpytorchno fix listedUBUNTU-CVE-2025-3730
Ubuntu:25.10pytorchno fix listedUBUNTU-CVE-2025-3730
Ubuntu:26.04:LTSpytorchno fix listedUBUNTU-CVE-2025-3730
Ubuntu:26.10pytorchno fix listedUBUNTU-CVE-2025-3730

Affected products (as reported)

VendorProductVersions
n/a PyTorch 2.6.0

Weakness: CWE-404 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References