Deserialization of Untrusted Data in vLLM - CVE-2025-29783

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU128750

Deserialization of Untrusted Data in vLLM - CVE-2025-29783

Published: March 19, 2025 / Updated: May 1, 2026


Vulnerability identifier: #VU128750
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-29783
CWE-ID: CWE-502
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Vulnerable software:
vLLM
Software vendor:
vLLM

Description

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to deserialization of untrusted data in the Mooncake integration mooncake_pipe.py when processing network-supplied data over ZMQ/TCP. A remote user can send a specially crafted serialized payload to execute arbitrary code.

Only deployments configured to use Mooncake for distributed KV transfer are vulnerable.


Remediation

Install security update from vendor's website.

External links