CVE-2025-8671

HIGH

HTTP/2 - DoS

Title source: llm

Description

A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.

Exploits (5)

nomisec WORKING POC 6 stars
by moften · poc
https://github.com/moften/CVE-2025-8671-MadeYouReset-HTTP-2-DDoS
github WORKING POC 2 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2025/CVE-2025-8671
nomisec WORKING POC 2 stars
by mateusm1403 · poc
https://github.com/mateusm1403/PoC-CVE-2025-8671-MadeYouReset-HTTP-2
nomisec SCANNER
by mysara2022 · poc
https://github.com/mysara2022/CVE-2025-8671-vulnerability-POC-
nomisec WORKING POC
by abiyeenzo · poc
https://github.com/abiyeenzo/CVE-2025-8671

Scores

CVSS v3 7.5
EPSS 0.0059
EPSS Percentile 69.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-404
Status published
Products (18)
Fastly/H20 579ecfa
SUSE Linux/Enterprise Desktop 15 SP6 - 15 SP7
SUSE Linux/Enterprise High Performance Computing 15 SP3 - 15 SP7
SUSE Linux/Enterprise High Performance Computing (HPC) 15 - 15 SP5
SUSE Linux/Enterprise Module for Development Tools 15 SP2 - 15-SP5
SUSE Linux/Enterprise Module for Dev Tools 15 SP3 - 15 SP7
SUSE Linux/Enterprise Module for Package Hub 15 SP5 - 15 SP7
SUSE Linux/Enterprise Server 12 SP5 - 15 SP7
SUSE Linux/Enterprise Server for SAP Applications 15 SP6 - 15 SP7
SUSE Linux/openSUSE Leap 15.6
... and 8 more
Published Aug 13, 2025
Tracked Since Feb 18, 2026