CVE-2025-52434

EUVD-2025-21045

10.07.2025, 19:15

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.

Race Condition

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 78.33%

Affected Products (NVD)

Vendor	Product	Version
apache	tomcat	9.0.0 ≤ 𝑥 < 9.0.107

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

tomcat9

bookworm	9.0.70-2 fixed
bullseye	vulnerable
bullseye (security)	9.0.118-0+deb11u1 fixed
forky	9.0.118-1 fixed
sid	9.0.118-1 fixed
trixie	9.0.95-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

tomcat6

bionic	dne
focal	dne
jammy	dne
noble	dne
questing	dne
resolute	dne
trusty	not-affected
xenial	not-affected

tomcat7

bionic	not-affected
focal	dne
jammy	dne
noble	dne
questing	dne
resolute	dne
trusty	not-affected
xenial	not-affected

tomcat10

bionic	dne
focal	dne
jammy	dne
noble	not-affected
questing	not-affected
resolute	not-affected
trusty	dne
xenial	dne

tomcat11

bionic	dne
focal	dne
jammy	dne
noble	dne
questing	not-affected
resolute	not-affected
trusty	dne
xenial	dne

tomcat8

bionic	needed
focal	dne
jammy	dne
noble	dne
questing	dne
resolute	dne
trusty	dne
xenial	needed

tomcat9

bionic	needed
focal	needed
jammy	needed
noble	not-affected
plucky	not-affected
questing	not-affected
resolute	not-affected

openSUSE / SLES Releases

openSUSE Product

Release

tomcat

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-admin-webapps

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-docs-webapp

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed

tomcat-el-3_0-api

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-javadoc

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed

tomcat-jsp-2_3-api

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-lib

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-servlet-4_0-api

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

tomcat-webapps

suse enterprise sap 12 SP5	9.0.115-3.160.1 fixed
suse enterprise sap 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise sap 15 SP7	9.0.108-150200.91.1 fixed
suse enterprise server 12 SP5	9.0.115-3.160.1 fixed
suse enterprise server 15 SP2	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP3	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP4	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP5	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP6	9.0.108-150200.91.1 fixed
suse enterprise server 15 SP7	9.0.108-150200.91.1 fixed

Red Hat Enterprise Linux Releases

Red Hat Product

Release

tomcat

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-admin-webapps

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-docs-webapp

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-el-3.0-api

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-jsp-2.3-api

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-lib

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-servlet-4.0-api

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

tomcat-webapps

RHEL 8	1:9.0.87-1.el8_10.6 fixed
RHEL 8.8 E4S	1:9.0.87-1.el8_8.7 fixed
RHEL 8.8 TUS	1:9.0.87-1.el8_8.7 fixed
RHEL 9	1:9.0.87-3.el9_6.3 fixed

Amazon Linux Releases

Amazon Package

Release

tomcat9

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-admin-webapps

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-docs-webapp

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-el-3.0-api

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-jsp-2.3-api

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-lib

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-servlet-4.0-api

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

tomcat9-webapps

Amazon Linux 2023

1:9.0.107-1.amzn2023.0.1

fixed

Common Weakness Enumeration

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The program 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

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

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

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