An issue was discovered in PyTorch v2.5 and v2.7.1. Omission of profiler.stop() can cause torch.profiler.profile (PythonTracer) to crash or hang during finalization, leading to a Denial of Service (DoS).

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00031.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected
—

Configuration 1 [-]

OR cpe:2.3:a:linuxfoundation:pytorch:2.5.0:-:*:*:*:python:*:*
cpe:2.3:a:linuxfoundation:pytorch:2.7.1:-:*:*:*:python:*:*

No data.

Vendor Product Confidence Versions
Pytorch Pytorch — —

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Tracking

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://pytorch.com cve-icon cve-icon cve-icon
https://github.com/Daisy2ang cve-icon cve-icon cve-icon
https://github.com/pytorch/pytorch cve-icon cve-icon cve-icon
https://github.com/pytorch/pytorch/issues/156563 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-63396 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-63396 cve-icon
History

Fri, 02 Jan 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Linuxfoundation
Linuxfoundation pytorch
CPEs cpe:2.3:a:linuxfoundation:pytorch:2.5.0:-:*:*:*:python:*:*
cpe:2.3:a:linuxfoundation:pytorch:2.7.1:-:*:*:*:python:*:*
Vendors & Products Linuxfoundation
Linuxfoundation pytorch

Tue, 25 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
Title pytorch: PyTorch denial of service
Weaknesses CWE-772
References
Metrics threat_severity

None

 threat_severity

Low

Thu, 13 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 13 Nov 2025 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Pytorch
Pytorch pytorch
Vendors & Products Pytorch
Pytorch pytorch

Wed, 12 Nov 2025 21:15:00 +0000

Type Values Removed Values Added
Description An issue was discovered in PyTorch v2.5 and v2.7.1. Omission of profiler.stop() can cause torch.profiler.profile (PythonTracer) to crash or hang during finalization, leading to a Denial of Service (DoS).
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-13T15:54:49.051Z

Reserved: 2025-10-27T00:00:00.000Z

Link: CVE-2025-63396

cve-icon Vulnrichment

Updated: 2025-11-13T15:47:17.755Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-12T21:15:52.397

Modified: 2026-01-02T20:54:21.600

Link: CVE-2025-63396

cve-icon Redhat

Severity : Low

Publid Date: 2025-11-12T00:00:00Z

Links: CVE-2025-63396 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-11-13T09:52:27Z

Weaknesses