CVE-2025-9784
highA flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters.
Vendor / product: Redhat — build of apache camel for spring boot
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
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2025-09-02 14:15
Modified: 2026-11-04 22:17
NVD status: Modified
Last synced 2 hours ago
Verified against the source API 2026-11-04 22:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
redhat / build_of_apache_camel_for_spring_boot all versions
redhat / fuse 7.0.0
redhat / jboss_enterprise_application_platform 7.0.0, 8.0.0
redhat / jboss_enterprise_application_platform_expansion_pack all versions
redhat / process_automation 7.0
redhat / single_sign-on 7.0
redhat / undertow all versions
redhat / enterprise_linux 8.0, 9.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2025-9784
References
- https://access.redhat.com/errata/RHSA-2025:23143 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:0383 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:0384 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:0386 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:33371 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:33372 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:3889 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:3891 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:3892 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:4915 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:4916 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:4917 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:4924 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:76128 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:76129 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:76130 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:76132 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:76134 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2025-9784 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2392306 secalert@redhat.com
- https://github.com/undertow-io/undertow/pull/1778 secalert@redhat.com
- https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final secalert@redhat.com
- https://issues.redhat.com/browse/UNDERTOW-2598 secalert@redhat.com
- https://kb.cert.org/vuls/id/767506 secalert@redhat.com
- https://www.kb.cert.org/vuls/id/767506 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 22:37 UTC · record ↗