vLLM Vulnerable to Remote Code Execution via Mooncake Integration
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| vllm-project | vllm | 0.6.5 to before 0.8.5 | 0.8.5 | Patch available | CNA |
| — | vllm (PyPI) | 0.6.5 to before 0.8.5 | 0.8.5 | Patch available | GHSA-hj4w-hm2g-p6w5 |
- vllm Vendorvllm-project Affected 0.6.5 to before 0.8.5 Fixed in 0.8.5 Patch available CNA
- vllm (PyPI) Vendor— Affected 0.6.5 to before 0.8.5 Fixed in 0.8.5 Patch available GHSA-hj4w-hm2g-p6w5
Remediation
- Fix · CNA vllm (vllm-project) Fixed in 0.8.5
- Fix · GHSA-hj4w-hm2g-p6w5 vllm (PyPI) Fixed in 0.8.5 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux AI (RHEL AI)
Timeline
- 2026-10-02 Threatist record created from CVE-2025-32444
- 2026-10-03 Alias added: GHSA-hj4w-hm2g-p6w5
References
Other 4
- https://github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7
- https://github.com/vllm-project/vllm/blob/32b14baf8a1f7195ca09484de3008063569b43c5/vllm/distributed/kv_transfer/kv_pipe/mooncake_pipe.py#L179
- https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-42.yaml
- https://github.com/vllm-project/vllm
More vllm-project vulnerabilities
- TI-2024-10229 Remote Code Execution in vllm-project/vllm CVSS 3.0CRITICAL 9.8
- TI-2024-08404 Remote Code Execution in vllm-project/vllm CVSS 3.1CRITICAL 9.8
- TI-2026-36017 vLLM: OpenAI auth bypass CVSS 3.1CRITICAL 9.1
- TI-2026-63056 vLLM before 0.28.0 Denial of Service via negative token ID CVSS 4.0HIGH 8.7
- TI-2026-04308 Hardcoded trust_remote_code=True in vllm-project/vllm Bypasses User Security Control CVSS 3.0HIGH 8.8
- TI-2026-39137 vLLM: Remote DoS in vLLM via Invalid Recovered Token Reinjection CVSS 3.1HIGH 7.5
Sources
- CVE-2025-32444 · CVE Program
- CVE-2025-32444 · NVD
- FIRST EPSS
- GHSA-hj4w-hm2g-p6w5 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-32444 · Red Hat security data · CC BY 4.0
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