CVE-2026-94624Network attack vectorHinoki check available

Denial of service via retained P2P sessions

Published Sep 21, 2026 · Updated Sep 21, 2026

Denial of service in vLLM Project vLLM 0.29.0 and earlier allows remote attackers to crash EngineCore through P2P KV offloading requests. The P2P tier accepts caller-controlled remote_host and remote_port values in kv_transfer_params and retains ZeroMQ sockets for unreachable peers until its context quota is exhausted. Reachability requires OffloadingConnector with TieringOffloadingSpec and a P2P secondary tier; exhaustion raises an uncaught ZMQError, crashes EngineCore, and stops all inference.

CVSS severityUnavailable
Unscored
EPSS probability0.63%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in vLLM Project vLLM 0.29.0 and earlier allows remote attackers to crash EngineCore through P2P KV offloading requests. The P2P tier accepts caller-controlled remote_host and remote_port values in kv_transfer_params and retains ZeroMQ sockets for unreachable peers until its context quota is exhausted. Reachability requires OffloadingConnector with TieringOffloadingSpec and a P2P secondary tier; exhaustion raises an uncaught ZMQError, crashes EngineCore, and stops all inference.

The record

CVE
CVE-2026-94624
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
vLLM Project
Product
vLLM
Classifications
T1499
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

vLLM Project · vLLMversion=0 <=0.29.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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