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CVE-2025-9784— Undertow: undertow madeyoureset http/2 ddos vulnerability

Quick assessment

Affected
CVE-2025-9784
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Undertow是美国红帽（Red Hat）公司的一款基于Java的嵌入式Web服务器，是Wildfly（Java应用服务器）默认的Web服务器。 Red Hat Undertow存在安全漏洞，该漏洞源于容易受到HTTP/2 DDoS攻击。

CVSS 7.5 · High EPSS 2.33% · P83

Affected Version Matrix 63

VendorProduct Version RangeStatus
None None < 2.2.38.Final affected
Red Hat Red Hat build of Apache Camel - HawtIO 4 any unaffected
Red Hat Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8 any unaffected
Red Hat Red Hat Data Grid 8 any affected
Red Hat Red Hat Enterprise Linux 10 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
Red Hat Red Hat Fuse 7 any affected
Red Hat Red Hat JBoss Enterprise Application Platform 7 any affected
Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el7eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el8eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el9eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8 any unaffected
any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.83.0-1.redhat_00001.1.el8eap< * unaffected
0:33.0.0-2.jre_redhat_00003.1.el8eap< * unaffected
0:4.0.6-1.redhat_00001.1.el8eap< * unaffected
0:1.0.0-3.redhat_00009.1.el8eap< * unaffected
0:2.0.2-1.Final_redhat_00001.1.el8eap< * unaffected
0:2.3.23-1.SP3_redhat_00001.1.el8eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.83.0-1.redhat_00001.1.el9eap< * unaffected
0:33.0.0-2.jre_redhat_00003.1.el9eap< * unaffected
0:4.0.6-1.redhat_00001.1.el9eap< * unaffected
0:1.0.0-3.redhat_00009.1.el9eap< * unaffected
0:2.0.2-1.Final_redhat_00001.1.el9eap< * unaffected
0:2.3.23-1.SP3_redhat_00001.1.el9eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.10-1.redhat_00001.1.el8eap< * unaffected
0:1.82.0-1.redhat_00001.1.el8eap< * unaffected
0:801.3.0-1.GA_redhat_00001.1.el8eap< * unaffected
0:1.0.1-3.redhat_00003.1.el8eap< * unaffected
0:6.6.36-1.Final_redhat_00001.1.el8eap< * unaffected
0:4.0.2-1.Final_redhat_00001.1.el8eap< * unaffected
0:2.5.0-1.redhat_00001.1.el8eap< * unaffected
0:2.3.20-2.SP4_redhat_00001.1.el8eap< * unaffected
… +4 more rows
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:4.0.10-1.redhat_00001.1.el9eap< * unaffected
0:1.82.0-1.redhat_00001.1.el9eap< * unaffected
0:801.3.0-1.GA_redhat_00001.1.el9eap< * unaffected
0:1.0.1-3.redhat_00003.1.el9eap< * unaffected
0:6.6.36-1.Final_redhat_00001.1.el9eap< * unaffected
0:4.0.2-1.Final_redhat_00001.1.el9eap< * unaffected
0:2.5.0-1.redhat_00001.1.el9eap< * unaffected
0:2.3.20-2.SP4_redhat_00001.1.el9eap< * unaffected
… +4 more rows
Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6 2.3.24.SP2-redhat-00001< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack any affected
any unaffected
Red Hat Red Hat Process Automation 7 any affected
Red Hat Red Hat Single Sign-On 7 any affected

I. Basic Information for CVE-2025-9784

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Undertow: undertow madeyoureset http/2 ddos vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Undertow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Undertow是美国红帽（Red Hat）公司的一款基于Java的嵌入式Web服务器，是Wildfly（Java应用服务器）默认的Web服务器。 Red Hat Undertow存在安全漏洞，该漏洞源于容易受到HTTP/2 DDoS攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 2.2.38.Final -
Red Hat Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8 - cpe:/a:redhat:apache_camel_spring_boot:4.14
Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7 ~ * cpe:/a:redhat:jboss_enterprise_application_platform_eus:7.1::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_eus:7.3::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001 ~ * cpe:/a:redhat:jboss_enterprise_application_platform:7.4
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:7.4.24-4.GA_redhat_00002.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:7.4.24-4.GA_redhat_00002.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:7.4.24-4.GA_redhat_00002.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 - cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.83.0-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:33.0.0-2.jre_redhat_00003.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:4.0.6-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.0.0-3.redhat_00009.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.0.2-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.3.23-1.SP3_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.83.0-1.redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:33.0.0-2.jre_redhat_00003.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:4.0.6-1.redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.0.0-3.redhat_00009.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.0.2-1.Final_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.3.23-1.SP3_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6 2.3.24.SP2-redhat-00001 ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.10-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.82.0-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:801.3.0-1.GA_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.0.1-3.redhat_00003.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:6.6.36-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8

II. Public POCs for CVE-2025-9784

# POC Description Source Link Shenlong Link
1 None https://github.com/drackyjr/CVE-2025-9784 POC Details
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8806 chars
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III. Intelligence Information for CVE-2025-9784

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Vendor Advisories for CVE-2025-9784 (14)

IV. Related Vulnerabilities

Same weakness: CWE-770

V. Comments for CVE-2025-9784

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