CVE catalog

CVE-2025-52434

tomcat9: CVE-2025-52434

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Jul 7, 2025, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.07% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	tomcat9	sid	`9.0.122-1`	fixed
Debian	tomcat9	forky	`9.0.122-1`	fixed
Debian	tomcat9	trixie	`9.0.95-1`	fixed
Debian	tomcat9	bookworm	`9.0.70-2`	fixed
Ubuntu	tomcat8	pro	`8.5.21-1ubuntu1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.29-1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.30-1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.30-1ubuntu1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.30-1ubuntu1.2`	vulnerable
Ubuntu	tomcat8	pro	`8.5.30-1ubuntu1.3`	vulnerable
Ubuntu	tomcat8	pro	`8.5.30-1ubuntu1.4`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.2`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm1`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm2`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm3`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm4`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm5`	vulnerable
Ubuntu	tomcat8	pro	`8.5.39-1ubuntu1~18.04.3+esm6`	vulnerable
Ubuntu	tomcat9	pro	`9.0.43-3`	vulnerable
Ubuntu	tomcat9	pro	`9.0.54-1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.55-1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.1+esm1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.1+esm2`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.1+esm3`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.1+esm4`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.2`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.2+esm1`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.2+esm2`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.2+esm3`	vulnerable
Ubuntu	tomcat9	pro	`9.0.58-1ubuntu0.2+esm4`	vulnerable
Opensuse	tomcat	tumbleweed	`9.0.107-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tomcat9	source	sid	`9.0.70-2`	not yet assigned	Not reported	Not reported
Debian	tomcat9	source	forky	`9.0.70-2`	not yet assigned	Not reported	Not reported
Debian	tomcat9	source	trixie	`9.0.70-2`	not yet assigned	Not reported	Not reported
Debian	tomcat9	source	bookworm	`9.0.70-2`	not yet assigned	Not reported	Not reported
Opensuse	tomcat	rpm	tumbleweed	`9.0.107-1.1`	Not reported	OPENSUSE-SU-2025:15440-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[tomcat-admin-webapps]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-docs-webapp]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-el-3_0-api]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-embed]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-javadoc]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-jsp-2_3-api]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-jsvc]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-lib]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-servlet-4_0-api]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat-webapps]Unknown
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Unknown · Fixed: 9.0.107-1.1
  Version impact unknown
  dsa · tomcat · opensuse · tumbleweed
[tomcat]Fixed
Source package: [tomcat]
Details (1)
- 9.0.120-2.1 · noarch · tumbleweed
  Fixed · Fixed: 9.0.107-1.1
  dsa · tomcat · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libtomcat9-java]Fixed
Source package: [tomcat9]
Details (2)
- 9.0.70-2 · all · bookworm
  Fixed · Fixed: 9.0.70-2
  dsa · tomcat9 · debian · bookworm; dsa · tomcat9 · debian · 12
- 9.0.70-2 · all · bookworm
  Fixed · Fixed: 9.0.70-2
  dsa · tomcat9 · debian · bookworm; dsa · tomcat9 · debian · 12

[Debian 13 (Trixie)]

[libtomcat9-java]Fixed
Source package: [tomcat9]
Details (2)
- 9.0.95-1 · all · trixie
  Fixed · Fixed: 9.0.70-2
  dsa · tomcat9 · debian · 13
- 9.0.95-1 · all · trixie
  Fixed · Fixed: 9.0.70-2
  dsa · tomcat9 · debian · 13

Observed: Oct 24, 2026, 9:16:40 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]