CVE-2025-52434

Published: Jul 10, 2025Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.

Affected (1)

Products: Apache: Tomcat

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Apache Tomcat	From 9.0.0 to 9.0.107

Related CWEs

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (3)

https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030

Source: security@apache.org

Issue TrackingMailing ListVendor Advisory

http://www.openwall.com/lists/oss-security/2025/07/10/11

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

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