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).

INFO

Published Date :

2025-09-02T13:37:59.772Z

Last Modified :

2026-04-01T11:43:10.566Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2025-9784 vulnerability.

Vendors Products
Redhat
  • Apache Camel Hawtio
  • Apache Camel Spring Boot
  • Build Of Apache Camel For Spring Boot
  • Enterprise Linux
  • Fuse
  • Jboss Data Grid
  • Jboss Enterprise Application Platform
  • Jboss Enterprise Application Platform Els
  • Jboss Enterprise Application Platform Expansion Pack
  • Jboss Enterprise Bpms Platform
  • Jboss Fuse
  • Jbosseapxp
  • Process Automation
  • Red Hat Single Sign On
  • Single Sign-on
  • Undertow
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-9784.

URL Resource
https://access.redhat.com/errata/RHSA-2025:23143 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0383 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0384 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0386 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:3889 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:3891 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:3892 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:4915 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:4916 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:4917 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:4924 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2025-9784 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2392306 cve-icon cve-icon
https://github.com/undertow-io/undertow/pull/1778 cve-icon cve-icon
https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final cve-icon cve-icon
https://issues.redhat.com/browse/UNDERTOW-2598 cve-icon cve-icon
https://kb.cert.org/vuls/id/767506 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-9784 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-9784 cve-icon
https://www.kb.cert.org/vuls/id/767506 cve-icon
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CVSS Vulnerability Scoring System

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