---
title: "CVE-2025-29783: vLLM Allows Remote Code Execution via Mooncake Integration"
url: https://erroneo.us/security/cve/CVE-2025-29783/
description: "CVE-2025-29783 (vllm (PyPI)): vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. When vLLM is configured to use Mooncake…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-03-19
date_modified: 2025-07-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-29783"
kev: false
cvss: 9.1
epss: 0.00734
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-29783: vLLM Allows Remote Code Execution via Mooncake Integration

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (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 0.7% , percentile 54: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 54% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes vllm (PyPI) >= 0.6.5, < 0.8.0, fixed in 0.8.0 . Check your lockfile, including transitive dependencies.

## What it is

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. When vLLM is configured to use Mooncake, unsafe deserialization exposed directly over ZMQ/TCP on all network interfaces will allow attackers to execute remote code on distributed hosts. This is a remote code execution vulnerability impacting any deployments using Mooncake to distribute KV across distributed hosts. This vulnerability is fixed in 0.8.0.

## Affected packages

- PyPI `vllm` >= 0.6.5, < 0.8.0 → fixed: 0.8.0

## Affected products (CVE record)

- vllm-project vllm: >= 0.6.5, < 0.8.0

## Severity

- GitHub_M CVSS 3.1: 9.1 `CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.0 `CVSS:3.1/AV:A/AC:L/PR:L/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): 0.73% probability of exploitation activity in the next 30 days; percentile 54.

## Sources

- [GitHub Advisory GHSA-x3m8-f7g5-qhm7](https://github.com/advisories/GHSA-x3m8-f7g5-qhm7)
- [CVE.org record CVE-2025-29783](https://www.cve.org/CVERecord?id=CVE-2025-29783)
- [NVD entry CVE-2025-29783](https://nvd.nist.gov/vuln/detail/CVE-2025-29783)
- [github.com](https://github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7)
- [github.com](https://github.com/vllm-project/vllm/pull/14228)
- [github.com](https://github.com/vllm-project/vllm/commit/288ca110f68d23909728627d3100e5a8db820aa2)
- [github.com](https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-63.yaml)

---
Source page: https://erroneo.us/security/cve/CVE-2025-29783/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt