Apache Releases Security Updates

Proof-of-concept exploit code has been shared publicly for CVE-2025-55752, which could lead to RCE

Threat ID:: CC-4712
Threat Severity:: Medium
Published:: 29 October 2025 1:38 PM

Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

Proof-of-concept exploit code has been shared publicly for CVE-2025-55752, which could lead to RCE

Affected platforms

The following platforms are known to be affected:

Apache Tomcat

11.0.0-M1 to 11.0.11
10.1.0-M1 to 10.1.45
9.0.0.M11 to 9.0.109
9.0.0.40 to 9.0.109

Threat details

Proof-of-concept exploit code released for CVE-2025-55752

Proof-of-concept (PoC) exploit code has been released publicly and exploitation is considered likely.

Introduction

Apache has released security updates for Tomcat 11, Tomcat 10, and Tomcat 9 to address three security vulnerabilities. Tomcat is an open-source web server and servlet container that is used to deploy and serve Java-based web applications.

CVE-2025-55752 is a 'Relative Path Traversal' vulnerability with a CVSSv3 score of 7.5 and given certain conditions, successful exploitation could lead to remote code execution (RCE). Proof-of-concept (PoC) exploit code has been released publicly and exploitation is considered likely.
CVE-2025-55754 is an 'Improper Neutralisation of Escape, Meta, or Control Sequences' vulnerability with a CVSSv3 score of 9.6 and successful exploitation could lead to an administrator being tricked into running an attacker-controlled command.
CVE-2025-61795 is an 'Improper Resource Shutdown or Release' vulnerability with a CVSSv3 score of 5.3 and successful exploitation could lead to a denial-of-service (DoS) condition.

Remediation advice

Affected organisations are encouraged to review the following advisories and apply the relevant updates as soon as possible.

Remediation steps

Type	Step
Guidance	Update to Apache Tomcat 11.0.12 or later https://tomcat.apache.org/security-11.html
Guidance	Update to Apache Tomcat 10.1.47 or later https://tomcat.apache.org/security-10.html
Guidance	Update to Apache Tomcat 9.0.110 or later https://tomcat.apache.org/security-9.html

CVE Vulnerabilities

Status Published

CVE-2025-55752

Relative Path Traversal vulnerability in Apache Tomcat. The fix for bug 60013 introduced a regression where the rewritten URL was normalized before it was decoded. This introduced the possibility that, for rewrite rules that rewrite query parameters to the URL, an attacker could manipulate the request URI to bypass security constraints including the protection for /WEB-INF/ and /META-INF/. If PUT requests were also enabled then malicious files could be uploaded leading to remote code execution. PUT requests are normally limited to trusted users and it is considered unlikely that PUT requests would be enabled in conjunction with a rewrite that manipulated the URI. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.10, from 10.1.0-M1 through 10.1.44, from 9.0.0.M11 through 9.0.108. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.6 though 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.11 or later, 10.1.45 or later or 9.0.109 or later, which fix the issue.

Status Published

CVE-2025-55754

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. Tomcat did not escape ANSI escape sequences in log messages. If Tomcat was running in a console on a Windows operating system, and the console supported ANSI escape sequences, it was possible for an attacker to use a specially crafted URL to inject ANSI escape sequences to manipulate the console and the clipboard and attempt to trick an administrator into running an attacker controlled command. While no attack vector was found, it may have been possible to mount this attack on other operating systems. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.10, from 10.1.0-M1 through 10.1.44, from 9.0.40 through 9.0.108. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.60 though 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.11 or later, 10.1.45 or later or 9.0.109 or later, which fix the issue.

Status Published

CVE-2025-61795

Improper Resource Shutdown or Release vulnerability in Apache Tomcat. If an error occurred (including exceeding limits) during the processing of a multipart upload, temporary copies of the uploaded parts written to disc were not cleaned up immediately but left for the garbage collection process to delete. Depending on JVM settings, application memory usage and application load, it was possible that space for the temporary copies of uploaded parts would be filled faster than GC cleared it, leading to a DoS. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.11, from 10.1.0-M1 through 10.1.46, from 9.0.0.M1 through 9.0.109. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.12 or later, 10.1.47 or later or 9.0.110 or later which fixes the issue.

Last edited: 29 October 2025 1:38 pm