Deserialization in Vllm
CVE-2025-32444
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.001
Affected products
- Vllm
- Vllm-Project Vllm — versions >= 0.6.5, < 0.8.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/vllm-project/vllm/security/advisories/GHSA-hj4w-hm2g-p6w5 (Exploit, Vendor Advisory)
- github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7 (Not Applicable)
- github.com/vllm-project/vllm/commit/a5450f11c95847cf51a17207af9a3ca5ab569b2c (Patch)
- github.com/vllm-project/vllm/blob/32b14baf8a1f7195ca09484de3008063569b43c5/vllm… (Product)
Frequently asked questions
- What is CVE-2025-32444?
- CVE-2025-32444 is a critical-severity vulnerability in Vllm, classified under Deserialization of Untrusted Data. CVSS score: 10.0/10. Published 2025-04-30.
- How severe is CVE-2025-32444?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2025-32444 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.