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).

Published: 2025-09-02

CVSS: 7.5

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Download Exploit for CVE-2025-9784 here:

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Check our team here:

https://tatramed.sk/exploit-779-cve-2024-21490/

https://tatramed.sk/exploit-244-cve-2023-41990/

https://tatramed.sk/exploit-28-cve-2025-30400/