> CVE-2025-53506 [HIGH]

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PUBLISHED
2025-07-10 20:15
MODIFIED
2025-08-08 13:15
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
2.13%
Top 17.9%
DATA SOURCES:
NVD 🔗 2025-10-18 RED HAT 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-11 OSV 🔗 2026-11-08

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

> AFFECTED_PRODUCTS

Apache - Tomcat
>= 9.0.0 <= 9.0.106
Apache - Tomcat
>= 10.1.0 <= 10.1.42
Apache - Tomcat
>= 11.0.0 <= 11.0.8

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulne...
Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Co...
Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security h...
Red Hat Security Advisory: tomcat security update
An update for tomcat is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: tomcat9 security update
An update for tomcat9 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: Red Hat JBoss Web Server 6.1.1 release and security update
Red Hat JBoss Web Server 6.1.1 zip release is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, and Windows Server. Red Hat Product Security has r...
Red Hat Security Advisory: Red Hat JBoss Web Server 6.1.1 release and security update
Red Hat JBoss Web Server 6.1.1 is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, and Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a...
Red Hat Security Advisory: Red Hat JBoss Web Server 5.8.5 release and security update
Red Hat JBoss Web Server 5.8.5 zip release is now available for Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, and Windows Server. Red Hat Product Security has ra...
Red Hat Security Advisory: Red Hat JBoss Web Server 5.8.5 release and security update
An update is now available for Red Hat JBoss Web Server 5.8 on Red Hat Enterprise Linux versions 7, 8, and 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Moderate

> GITHUB SECURITY ADVISORY

GHSA-25xr-qj8w-c4vf HIGH

Apache Tomcat Coyote vulnerable to Denial of Service via excessive HTTP/2 streams

AFFECTED PACKAGES:
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 11.0.0-M1, < 11.0.9
Fixed in: 11.0.9
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 10.1.0-M1, < 10.1.43
Fixed in: 10.1.43
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 9.0.0.M1, < 9.0.107
Fixed in: 9.0.107
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 8.5.0, <= 8.5.100
MAVEN / org.apache.tomcat:tomcat-coyote
>= 8.5.0, <= 8.5.100
MAVEN / org.apache.tomcat:tomcat-coyote
>= 9.0.0.M1, < 9.0.107
Fixed in: 9.0.107
MAVEN / org.apache.tomcat:tomcat-coyote
>= 10.1.0-M1, < 10.1.43
Fixed in: 10.1.43
MAVEN / org.apache.tomcat:tomcat-coyote
>= 11.0.0-M1, < 11.0.9
Fixed in: 11.0.9

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Apache Tomcat: DoS via excessive h2 streams at connection start

AFFECTED PACKAGES:
Unknown / Unknown
ALIASES:
BIT-tomcat-2025-53506, GHSA-25xr-qj8w-c4vf

> HISTORIQUE DES MODIFICATIONS

Première apparition
10/07/2025 20:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 15:06
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 18/10/2025 12:10
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Moderate", "severity_scale": null }
📊 ENRICHISSEMENT 18/10/2025 12:10
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 1 year ago
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