vLLM through 0.29.0 contains a denial of service vulnerability in P2P KV offloading when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can supply arbitrary remote host and port values in kv_transfer_params to create unreachable peer sessions that retain ZeroMQ sockets until the context quota is exhausted, causing an uncaught ZMQError that crashes EngineCore and stops all inference.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Vllm
  • Vllm
Vllm-project
  • Vllm

Configuration 1 [-]

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/vllm-project/vllm cve-icon cve-icon cve-icon
https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/control/zmq.py#L240-L260 cve-icon cve-icon cve-icon
https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/manager.py#L667-L677 cve-icon cve-icon cve-icon
https://github.com/vllm-project/vllm/pull/51504 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-94624 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-94624 cve-icon
https://www.vulncheck.com/advisories/vllm-through-0.29.0-denial-of-service-via-unbounded-p2p-kv-offloading-sessions cve-icon cve-icon cve-icon
History

Wed, 23 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-772
References
Metrics threat_severity

None

 threat_severity

Important

Tue, 22 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 21 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Vllm-project
Vllm-project vllm
Vendors & Products Vllm-project
Vllm-project vllm

Mon, 21 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
Description vLLM through 0.29.0 contains a denial of service vulnerability in P2P KV offloading when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can supply arbitrary remote host and port values in kv_transfer_params to create unreachable peer sessions that retain ZeroMQ sockets until the context quota is exhausted, causing an uncaught ZMQError that crashes EngineCore and stops all inference.
Title vLLM through 0.29.0 Denial of Service via Unbounded P2P KV Offloading Sessions
First Time appeared Vllm
Vllm vllm
Weaknesses CWE-770
CPEs cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
Vendors & Products Vllm
Vllm vllm
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-21T22:04:13.172Z

Updated: 2026-09-22T13:26:57.950Z

Reserved: 2026-09-21T21:42:26.965Z

Link: CVE-2026-94624

cve-icon Vulnrichment

Updated: 2026-09-22T13:26:35.772Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-21T22:17:01.280

Modified: 2026-09-29T12:47:10.597

Link: CVE-2026-94624

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-21T22:04:13Z

Links: CVE-2026-94624 - Bugzilla