CVE-2025-53506

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. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/p09775q0rd185m6zz98krg0fp45j8kr0	Vendor Advisory Issue Tracking Mailing List

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::

History

29 Jul 2025, 18:35

Type	Values Removed	Values Added
CPE		cpe:2.3:a:apache:tomcat::::::::
First Time		Apache Apache tomcat
References	~~() https://lists.apache.org/thread/p09775q0rd185m6zz98krg0fp45j8kr0 -~~	() https://lists.apache.org/thread/p09775q0rd185m6zz98krg0fp45j8kr0 - Vendor Advisory, Issue Tracking, Mailing List

11 Jul 2025, 14:15

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de consumo incontrolado de recursos en Apache Tomcat si un cliente HTTP/2 no reconoce el marco de configuración inicial que reduce el máximo de transmisiones simultáneas permitidas. Este problema afecta a Apache Tomcat: de 11.0.0-M1 a 11.0.8, de 10.1.0-M1 a 10.1.42, y de 9.0.0.M1 a 9.0.106. Se recomienda actualizar a las versiones 11.0.9, 10.1.43 o 9.0.107, que solucionan el problema.
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

10 Jul 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-07-10 20:15

Updated : 2025-07-29 18:35

NVD link : CVE-2025-53506

Mitre link : CVE-2025-53506

CVE.ORG link : CVE-2025-53506

JSON object : View

Products Affected

apache

tomcat

CWE

CWE-400

Uncontrolled Resource Consumption

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