Deserialization of untrusted data in vLLM - CVE-2025-32444
Published: January 9, 2026
Vulnerability identifier: #VU121141
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-32444
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: vLLM
Affected software:
vLLM
vLLM
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in Mooncake integration. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Note, only systems with Mooncake integration are affected.
How to mitigate CVE-2025-32444
Install updates from vendor's website.