H2O HTTP Server HTTP/2 Protocol DoS Vulnerability (GHSA-mrjm-qq9m-9mjq, MadeYouReset)

H2O is prone to a denial of service DoS vulnerability in the HTTP/2 protocol dubbed SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

Apache Tomcat HTTP/2 Protocol DoS Vulnerability (MadeYouReset) - Linux

Apache Tomcat is prone to is prone to a denial of service DoS vulnerability in the HTTP/2 protocol dubbed SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier:...

CVE-2025-20268

A vulnerability in the Geolocation-Based Remote Access RA VPN feature of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured policies to allow or deny HTTP connections based on a country or region. This vulnerability exists becaus...

CVE-2025-54074

Cherry Studio is a desktop client that supports for multiple LLM providers. From versions 1.2.5 to 1.5.1, Cherry Studio is vulnerable to OS Command Injection during a connection with a malicious MCP server in HTTP Streamable mode. Attackers can setup a malicious MCP server with compatible OAuth...

CVE-2025-55163

A flaw was found in Netty 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...

CVE-2025-20306

A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center FMC Software could allow an authenticated, remote attacker with Administrator-level privileges to execute arbitrary commands on the underlying operating system. This vulnerability is due to insufficie...

CVE-2025-20268 Cisco Secure Firewall Threat Defense Software Geolocation Remote Access VPN Bypass Vulnerability

A vulnerability in the Geolocation-Based Remote Access RA VPN feature of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured policies to allow or deny HTTP connections based on a country or region. This vulnerability exists becaus...

CVE-2025-20263 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability

A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected system. This vulnerability is due to...

CVE-2025-20251

CVE-2025-20251 affects Cisco Secure Firewall ASA/FTD VPN Web Server: authenticated remote attacker can use crafted HTTP requests to create or delete arbitrary files on the OS due to insufficient input validation, potentially dropping VPN sessions and causing DoS; device reboot may be required. Ex...

FreeBSD : www/varnish7 -- Denial of Service in HTTP/2 (e2d49973-785a-11f0-a1c0-0050569f0b83)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the e2d49973-785a-11f0-a1c0-0050569f0b83 advisory. Varnish Development Team reports: A denial of service attack can be performed on Varnish Cache servers...

Apache Tomcat 11.0.0.M1 < 11.0.10

The version of Tomcat installed on the remote host is prior to 11.0.10. It is, therefore, affected by a vulnerability as referenced in the fixedinapachetomcat11.0.10security-11 advisory. - Tomcat's HTTP/2 implementation was vulnerable to the made you reset attack. The denial of service typically...

CVE-2025-54500

An HTTP/2 implementation flaw allows a denial-of-service DoS that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit HTTP/2 MadeYouReset Attack. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames

A flaw was found in Apache Tomcat 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...

CVE-2025-54500 HTTP/2 Vulnerability

An HTTP/2 implementation flaw allows a denial-of-service DoS that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit HTTP/2 MadeYouReset Attack. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2025-54500 HTTP/2 Vulnerability

An HTTP/2 implementation flaw allows a denial-of-service DoS that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit HTTP/2 MadeYouReset Attack. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2025-54500

CVE-2025-54500 describes an HTTP/2 implementation flaw that allows a DoS via malformed HTTP/2 control frames to break the max concurrent streams limit (the MadeYouReset attack). Affected products are F5 BIG-IP and BIG-IP Next families with multiple vulnerable branches; affected versions include B...

CVE-2025-55163 Netty MadeYouReset HTTP/2 DDoS Vulnerability

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent...

CVE-2025-8671

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 serv...

CVE-2025-8671

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 serv...

MadeYouReset: Turning HTTP/2 Server Against Itself

Introduction HTTP/2 was designed for performance- faster multiplexed connections, stream prioritization, and header compression. But these same features have also opened the door for sophisticated denial-of-service attacks. Back in 2023, the HTTP/2 Rapid Reset vulnerability made headlines after...