PT-2026-26969 · Pytorch · Pytorch

Ez-Lbz · Published 2026-03-22 · Updated 2026-04-30 · CVE-2026-4538

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions PyTorch version 2.10.0

Description A flaw exists in PyTorch related to deserialization within the pt2 Loading Handler component. The issue is triggered by manipulation of an unknown function. This can be exploited in a local environment. The project was informed of the problem through a pull request, but a response has not been issued.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

CWE-20

Related Identifiers

BDU:2026-04699

BIT-PYTORCH-2026-4538

CVE-2026-4538

PYSEC-2026-139

Affected Products

Pytorch

References · 19

• 🔥 https://github.com/pytorch/pytorch/pull/176791 · Exploit
• https://osv.dev/vulnerability/PYSEC-2026-139 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-4538 · Security Note
• https://osv.dev/vulnerability/BIT-pytorch-2026-4538 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04699 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-4538 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-4538 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-4538 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-4538 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4538 · Security Note
• https://vuldb.com/?id.352326 · Note
• https://vuldb.com/?ctiid.352326 · Note
• https://vuldb.com/?submit.774681 · Note
• https://twitter.com/cyberbivash/status/2035591057103061280 · Twitter Post
• https://twitter.com/CVEarity/status/2035714032980853035 · Twitter Post