CVE-2025-29783

Description

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.

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CVSS v3.1 Score

9.0

CRITICAL

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor	Product	Versions
vllm	vllm	0.6.5 — 0.8.0

References

Advisories & Patches

https://github.com/vllm-project/vllm/commit/288ca110f68d23909728627d3100e5a8db820aa2 https://github.com/vllm-project/vllm/pull/14228 https://github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7

Frequently Asked Questions

What is CVE-2025-29783? +

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. It has a CVSS v3.1 base score of 9.0 (CRITICAL).

How severe is CVE-2025-29783? +

CVE-2025-29783 has a CVSS v3.1 score of 9.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-29783? +

CVE-2025-29783 affects products from vllm, specifically: vllm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-29783? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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