CVE-2025-55754: Apache Tomcat: console manipulation via escape sequences in log messages
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.
Security readout for executives and security teams
Apache Tomcat can write attacker-controlled ANSI escape sequences into console logs. In the documented case, a Windows console supporting ANSI sequences could be manipulated, including clipboard manipulation, to trick an administrator into running an attacker-controlled command. This is serious but depends on administrator interaction and a console-based operating context. Exposure is most relevant where affected Tomcat versions run in an interactive console, especially Windows consoles with ANSI escape support. Internet-facing applications may receive crafted URLs, but successful impact also requires an administrator viewing manipulated console output and being deceived. Prioritize remediation for administrative or production systems running affected Tomcat versions, especially where operators view console logs. The score is critical, but practical risk depends on deployment context and user interaction. Mitigation focus: Upgrade Tomcat 11 to 11.0.11 or later.; Upgrade Tomcat 10.1 to 10.1.45 or later.; Upgrade Tomcat 9.0 to 9.0.109 or later..
Prepared
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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1CVSS vectors
3Timeline events
3ADP providers
3Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
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CWE-150 · source CWE mapping
Improper Neutralization of Escape, Meta, or Control Sequences
Improper Neutralization of Escape, Meta, or Control Sequences represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.