AUGUST 4, 2026
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Case File

CVE-2025-53506

HIGH · CVSS 7.5 EPSS 1.90%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-07-10 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Apache.

CVE
CVE-2025-53506
Severity
HIGH
CVSS
7.5
EPSS
1.90%
Apache

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)