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High 7.5Published Sep 2, 2025
CVE-2025-9784Undertow: undertow madeyoureset http/2 ddos vulnerability
Updated under an hour ago ()
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It affects Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8 and 17 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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).
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770, CWE-404
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Red Hat Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8 redhat:apache_camel_spring_boot | 4.14 | CNA record |
Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 redhat:jboss_enterprise_application_platform_eus | from 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7 not affected | CNA record |
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 redhat:jboss_enterprise_application_platform | from 2.2.39.Final-redhat-00001 not affected | CNA record |
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 redhat:jboss_enterprise_application_platform_els | from 0:2.2.39-1.Final_redhat_00001.1.el7eap not affected | CNA record |
Red Hat Red Hat Single Sign-On 7.6.13 redhat:red_hat_single_sign_on | 7.6 | CNA record |
Red Hat RHEL-8 based Middleware Containers redhat:rhosemc | from 7.6-85 not affected | CNA record |
Red Hat Red Hat build of Apache Camel - HawtIO 4 redhat:apache_camel_hawtio | 4 | CNA record |
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid | 8 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CNA record |
Red Hat Red Hat Fuse 7 redhat:jboss_fuse | 7 | CNA record |
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp | All versions | CNA record |
Red Hat Red Hat Process Automation 7 redhat:jboss_enterprise_bpms_platform | 7 | CNA record |
redhat build_of_apache_camel_for_spring_boot redhat:build_of_apache_camel_for_spring_boot | all versions | NVD |
redhat fuse redhat:fuse | 7.0.0 | NVD |
redhat jboss_enterprise_application_platform redhat:jboss_enterprise_application_platform | 7.0.0; 8.0.0 | NVD |
redhat jboss_enterprise_application_platform_expansion_pack redhat:jboss_enterprise_application_platform_expansion_pack | all versions | NVD |
redhat process_automation redhat:process_automation | 7.0 | NVD |
redhat single_sign-on redhat:single_sign-on | 7.0 | NVD |
redhat undertow redhat:undertow | all versions | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0; 9.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2025:23143vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:0383vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:0384vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:0386vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:33371vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:33372vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:3889vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:3891vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:3892vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:4915vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:4916vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:4917vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:4924vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76128vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76129vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76130vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76132vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76134vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2025-9784vdb-entry, x-refsource-redhat, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2392306issue-tracking, x-refsource-redhat
- https://github.com/undertow-io/undertow/pull/1778
- https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final
- https://issues.redhat.com/browse/UNDERTOW-2598
- https://kb.cert.org/vuls/id/767506
- https://www.kb.cert.org/vuls/id/767506
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