CVE-2025-9784

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).

Configurations

Configuration 1 (hide)

OR cpe:2.3:a:redhat:build_of_apache_camel_for_spring_boot:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:fuse:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:process_automation:7.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:undertow:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

History

05 Mar 2026, 20:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:3889 -
  • () https://access.redhat.com/errata/RHSA-2026:3891 -
  • () https://access.redhat.com/errata/RHSA-2026:3892 -

08 Jan 2026, 23:15

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:0383 -

08 Jan 2026, 17:15

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:0384 -
  • () https://access.redhat.com/errata/RHSA-2026:0386 -

11 Dec 2025, 23:15

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2025:23143 -
  • () https://kb.cert.org/vuls/id/767506 -

07 Nov 2025, 22:15

Type Values Removed Values Added
References
  • () https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final -

03 Nov 2025, 20:19

Type Values Removed Values Added
References
  • () https://www.kb.cert.org/vuls/id/767506 -

24 Sep 2025, 14:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-09-02 14:15

Updated : 2026-03-05 20:16


NVD link : CVE-2025-9784

Mitre link : CVE-2025-9784

CVE.ORG link : CVE-2025-9784


JSON object : View

CWE
CWE-770

Allocation of Resources Without Limits or Throttling

CWE-404

Improper Resource Shutdown or Release