CVE-2024-32760Network attack vector

Worker process crash via crafted QUIC session

Published May 29, 2024 · Updated Feb 13, 2025

Buffer overwrite in NGINX Open Source 1.25.0 through 1.26.0 and Plus R30 through R31 allows remote attackers to crash workers via QUIC. The vendor identifies undisclosed HTTP/3 encoder instructions as the trigger but has not published the specific routine or faulty write operation. Exposure requires an experimental ngx_http_v3_module build, which is not default, and a listener configured with the quic option.

CVSS severity6.5
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overwrite in NGINX Open Source 1.25.0 through 1.26.0 and Plus R30 through R31 allows remote attackers to crash workers via QUIC. The vendor identifies undisclosed HTTP/3 encoder instructions as the trigger but has not published the specific routine or faulty write operation. Exposure requires an experimental ngx_http_v3_module build, which is not default, and a listener configured with the quic option.

The record

CVE
CVE-2024-32760
Published
May 29, 2024
Updated
Feb 13, 2025
Vendor
Fedora Project
Product
Fedora Linux
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=39
  2. Affected versionversion=40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fedora Project · Fedora Linuxversion=39; version=40
F5 Networks · NGINX Open Sourceversion=1.25.0 <=1.26.0; version=1.25.0 <1.26.1
F5 Networks · NGINX Plusversion=r30 <=r31; version=R30 <R32

Published CVSS scores

6.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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