CVE-2025-63396
PyTorch Denial of Service (DoS)
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).
INFO
Published Date :
Nov. 12, 2025, 9:15 p.m.
Last Modified :
Jan. 2, 2026, 8:54 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Always call profiler.stop() after profiler.start().
- Handle exceptions to ensure profiler.stop() is executed.
- Update to a patched version of PyTorch when available.
Public PoC/Exploit Available at Github
CVE-2025-63396 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-63396.
| URL | Resource |
|---|---|
| http://pytorch.com | Product |
| https://github.com/Daisy2ang | Not Applicable |
| https://github.com/pytorch/pytorch | Product |
| https://github.com/pytorch/pytorch/issues/156563 | Exploit Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-63396 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-63396
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
JavaScript Shell Python Dockerfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-63396 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-63396 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 02, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:linuxfoundation:pytorch:2.5.0:-:*:*:*:python:*:* *cpe:2.3:a:linuxfoundation:pytorch:2.7.1:-:*:*:*:python:*:* Added Reference Type MITRE: http://pytorch.com Types: Product Added Reference Type MITRE: https://github.com/Daisy2ang Types: Not Applicable Added Reference Type MITRE: https://github.com/pytorch/pytorch Types: Product Added Reference Type MITRE: https://github.com/pytorch/pytorch/issues/156563 Types: Exploit, Issue Tracking -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-667 -
New CVE Received by [email protected]
Nov. 12, 2025
Action Type Old Value New Value 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). Added Reference http://pytorch.com Added Reference https://github.com/Daisy2ang Added Reference https://github.com/pytorch/pytorch Added Reference https://github.com/pytorch/pytorch/issues/156563