CVE-2025-52434CWE-362

Apache Tomcat: APR/Native Connector crash leading to DoS

High · published July 10, 2025

CVSS v3.1
7.5
EPSS
2%
Percentile
81.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02074 · 81.3th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2025-07-10T19:03Z
EPSS history
Timeline
  • 10 JUL 19:03Z
    Apache Tomcat: APR/Native Connector crash leading to DoS
    cvelistv5