3.3

CVE-2025-63396: linuxfoundation pytorch Improper Locking

CVSS: 3.3v3.1LowModified
AliasesPYSEC-2025-210BIT-pytorch-2025-63396UBUNTU-CVE-2025-63396
Published 12-11-2025Last modified 05-07-2026
Open JSON

Vulnerability summary

CVE-2025-63396 is a low (CVSS 3.3) Improper Locking vulnerability in linuxfoundation pytorch. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
3.3/10
010
Low · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 12-11-2025
    PublishedVulnerability first disclosed.
  2. 05-07-2026
    Last modifiedVulnerability information updated.

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).

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.01 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Pytorch

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • pytorchAll versions (No fix recorded)
Linuxfoundation1 product
PyPI1 product
  • torch≤ 2.7.1-NA
Ubuntu1 product
  • pytorchAll versions (No fix recorded)

4 vendors · 4 products

References

7 links