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VULNERABILITIES

CVE-2025-53506 Details

Description

Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, 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 EOL versions may also be affected. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html CVE
http://www.openwall.com/lists/oss-security/2025/07/10/13 CVE
https://lists.apache.org/thread/p09775q0rd185m6zz98krg0fp45j8kr0 [email protected]Issue TrackingMailing ListVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-400Uncontrolled Resource Consumption[email protected]

Affected Products

ProductVersions
apache tomcat
>= 9.0.0, <= 9.0.106
>= 10.1.0, <= 10.1.42
>= 11.0.0, <= 11.0.8

CPE

  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-53506
NVD Published Date:
Jul 10, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-53506 Details - Not Deferred