CVE-2025-50461

MEDIUM EPSS 36.7%
Published Aug 19, 202510mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the "fsdp" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
36.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-77 Command Injection Injection

References 5

  • github.com https://github.com/Anchor0221/CVE-2025-50461
  • github.com https://github.com/pytorch/pytorch/blob/main/SECURITY.md#loading-untrusted-data
  • github.com https://github.com/volcengine/verl
  • github.com https://github.com/volcengine/verl/blob/main/scripts/model_merger.py#L152
  • pytorch.org https://pytorch.org/docs/stable/generated/torch.load.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.