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🛡️ CVE-2025-55754 — tomcat

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-150 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 through 11.0.10, from 10.1.0 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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must actively cooperate. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Attack requirements: Present — the target has to be in a particular state for the attack to work.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Active — the victim has to cooperate with the attack.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2025-55754 is classified as CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as escape, meta, or control character sequences when they are sent to a downstream component.

Affected software

CVE-2025-55754 is recorded against 4 packages.

  • org.apache.tomcat.embed:tomcat-embed-core (from 8.5.60)
  • org.apache.tomcat:tomcat (from 8.5.60)
  • org.apache.tomcat:tomcat-catalina (from 8.5.60)
  • tomcat

Timeline and source

Published on 27 October 2025 and last revised on 13 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
cert-portal.siemens.com (Web)
github.com (Package)
lists.apache.org (Web)
tomcat.apache.org (Web)
tomcat.apache.org (Web)
tomcat.apache.org (Web)
www.openwall.com (Web)

Other advisories for this package

org.apache.tomcat:tomcat has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences) in other software:

CVE-2025-55754 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 9.5
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CWE CWE-150
Public Exploit ✅ No
Source OSV
Published 2025-10-27
Updated 2026-08-20
Modified 2026-05-13
Fix URL N/A

Affected Packages

Software From version Fixed in
org.apache.tomcat:tomcat 8.5.60 —
org.apache.tomcat:tomcat-catalina 8.5.60 —
org.apache.tomcat.embed:tomcat-embed-core 8.5.60 —
tomcat — —

Exploit Protection

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CVE-2025-55754 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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