CVE-2025-55754
October 27, 2025
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.
Affected Packages
org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.45Fix Suggestion:
Update to version 10.1.45org.apache.tomcat:tomcat-juli (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.45Fix Suggestion:
Update to version 10.1.45org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.40 <9.0.109Fix Suggestion:
Update to version 9.0.109org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.11Fix Suggestion:
Update to version 11.0.11org.apache.tomcat:tomcat-juli (JAVA):
Affected version(s) >=9.0.40 <9.0.109Fix Suggestion:
Update to version 9.0.109org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=9.0.40 <9.0.109Fix Suggestion:
Update to version 9.0.109org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.45Fix Suggestion:
Update to version 10.1.45org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.11Fix Suggestion:
Update to version 11.0.11org.apache.tomcat:tomcat-juli (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.11Fix Suggestion:
Update to version 11.0.11Related Resources (10)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Escape, Meta, or Control Sequences
EPSS
Base Score:
0.1