CVE-2025-32444

Description

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Versions starting from 0.6.5 and prior to 0.8.5, having vLLM integration with mooncake, are vulnerable to remote code execution due to using pickle based serialization over unsecured ZeroMQ sockets. The vulnerable sockets were set to listen on all network interfaces, increasing the likelihood that an attacker is able to reach the vulnerable ZeroMQ sockets to carry out an attack. vLLM instances that do not make use of the mooncake integration are not vulnerable. This issue has been patched in version 0.8.5.

How to fix CVE-2025-32444

To remediate CVE-2025-32444, upgrade the affected package to a fixed version below.

• —upgrade to 0.8.5 or later
• —upgrade to a5450f11c95847cf51a17207af9a3ca5ab569b2c or later

Is CVE-2025-32444 being exploited?

Low — EPSS is 2.5%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• >= 0.6.5, < 0.8.5
• from 0, < a5450f11c95847cf51a17207af9a3ca5ab569b2c | >= 0.6.5, < 0.8.5

CVSS scores

References (8)

• ADVISORYgithub.com/advisories/GHSA-hj4w-hm2g-p6w5
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-32444
• PATCHgithub.com/vllm-project/vllm
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-42.yaml