Local Privilege Escalation in PyTorch's TorchServe by Predictable Extraction Directory
CVE-2026-123974

7.8HIGH

Key Information:

Vendor

Pytorch

Status
Torchserve
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123974?

A predictable extraction directory in the /tmp folder within all versions of PyTorch's TorchServe allows a local user to execute a model handler swap. This exploitation could enable the execution of arbitrary code as the TorchServe service account, potentially leading to unauthorized escalation of user privileges.

Affected Version(s)

TorchServe 0

References

https://christbowel.com/blog/torchserve-lpe/
https://github.com/Christbowel/torchserve-lpe

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Christ Bowel
.