---
title: "CVE-2025-32444: vLLM Vulnerable to Remote Code Execution via Mooncake Integration"
url: https://erroneo.us/security/cve/CVE-2025-32444/
description: "CVE-2025-32444 (vllm (PyPI)): vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Versions starting from 0.6.5 and prior…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-04-30
date_modified: 2025-05-29
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-32444"
kev: false
cvss: 10
epss: 0.01789
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-32444: vLLM Vulnerable to Remote Code Execution via Mooncake Integration

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.8% , percentile 78: FIRST’s model estimates a 1.8% chance of exploitation activity in the next 30 days, higher than 78% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes vllm (PyPI) >= 0.6.5, < 0.8.5, fixed in 0.8.5 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- PyPI `vllm` >= 0.6.5, < 0.8.5 → fixed: 0.8.5

## Affected products (CVE record)

- vllm-project vllm: >= 0.6.5, < 0.8.5

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.79% probability of exploitation activity in the next 30 days; percentile 78.

## Sources

- [GitHub Advisory GHSA-hj4w-hm2g-p6w5](https://github.com/advisories/GHSA-hj4w-hm2g-p6w5)
- [CVE.org record CVE-2025-32444](https://www.cve.org/CVERecord?id=CVE-2025-32444)
- [NVD entry CVE-2025-32444](https://nvd.nist.gov/vuln/detail/CVE-2025-32444)
- [github.com](https://github.com/vllm-project/vllm/security/advisories/GHSA-hj4w-hm2g-p6w5)
- [github.com](https://github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7)
- [github.com](https://github.com/vllm-project/vllm/commit/a5450f11c95847cf51a17207af9a3ca5ab569b2c)
- [github.com](https://github.com/vllm-project/vllm/blob/32b14baf8a1f7195ca09484de3008063569b43c5/vllm/distributed/kv_transfer/kv_pipe/mooncake_pipe.py#L179)
- [github.com](https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-42.yaml)

---
Source page: https://erroneo.us/security/cve/CVE-2025-32444/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt