CVE-2024-45311Public exploitNetwork attack vector

Service interruption via inconsistent connection ID cleanup

Published Sep 2, 2024 · Updated Sep 3, 2024

Denial of service in Quinn quinn-proto 0.11.0 through 0.11.6 allows remote attackers to crash servers via crafted QUIC traffic. Endpoint cleanup confuses the original initial destination connection ID with the post-Retry packet's destination ID, removes the wrong connection-index entry, and leaves internal state inconsistent until later packet handling panics. Exploitation requires a server that calls Endpoint::retry() and then refuses, ignores, or accepts the validated connection; the consequence is a process crash and service interruption.

CVSS severity7.5
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Quinn quinn-proto 0.11.0 through 0.11.6 allows remote attackers to crash servers via crafted QUIC traffic. Endpoint cleanup confuses the original initial destination connection ID with the post-Retry packet's destination ID, removes the wrong connection-index entry, and leaves internal state inconsistent until later packet handling panics. Exploitation requires a server that calls Endpoint::retry() and then refuses, ignores, or accepts the validated connection; the consequence is a process crash and service interruption.

The record

CVE
CVE-2024-45311
Published
Sep 2, 2024
Updated
Sep 3, 2024
Vendor
Quinn Project
Product
Quinn
Classifications
CWE-670, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2024Record 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=>= 0.11.0, < 0.11.7
  2. Affected versionversion=0.11.0 <0.11.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quinn Project · Quinnversion=>= 0.11.0, < 0.11.7; version=0.11.0 <0.11.7

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-670Always-Incorrect Control Flow Implementation
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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