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CVE-2025-9784

nvd nist
Published: Sep 2, 2025Modified: Jul 24, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: secalert@redhat.com (Secondary)

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).

Affected (10)

8 products
Enterprise Linux
Fuse
Process Automation
Single Sign On
Undertow
Configuration A
10 vulnerable

References (20)

Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Issue Tracking
Source: secalert@redhat.com
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.