Tag: denial of service
34 articles
HTTP/2 Bomb Attack Disrupts Web Servers in Seconds
A home computer on a typical 100Mbps connection can cripple a vulnerable server in mere seconds using a new technique called the HTTP/2 Bomb, which cleverly combines two known weaknesses in HTTP/2 server configurations. This potent attack can be unleashed quickly, leaving servers inaccessible.
HTTP/2 Bomb Vulnerability Targets Major Web Servers with Remote DoS Exploit
A newly discovered HTTP/2 Bomb vulnerability can be exploited to launch a remote Denial of Service (DoS) attack on major web servers, taking advantage of a weakness in the default HTTP/2 configuration. This flaw cleverly combines a compression bomb and a Slowloris-style hold to target HPACK, HTTP/2's header-compression scheme.
Microsoft Discloses Actively Exploited Defender Vulnerabilities
Microsoft warns of two critical vulnerabilities in its Defender software, one of which is being actively exploited by attackers to gain elevated privileges, and the other causing denial-of-service issues. These flaws, tracked as CVE-2026-41091 and CVE-2026-45498, highlight the need for urgent patching to prevent system compromise.
NGINX Vulnerability Exposes Servers to DoS, Potential Code Execution
A critical vulnerability, CVE-2026-42945, has been lurking in NGINX's code for 18 years, exposing servers to potential DoS attacks and code execution - and affecting a staggering third of the top-ranked websites. This heap buffer overflow flaw, rated 9.2 in severity, is a wake-up call for NGINX users to take immediate action.
Cisco Discloses High-Severity DoS Flaw Requiring Manual Reboot
Beware: a high-severity flaw in Cisco's system could allow attackers to overwhelm your network, causing a manual reboot to regain control. This vulnerability can be exploited remotely with ease, putting your connection resources at risk of exhaustion and leaving you vulnerable to a denial-of-service condition.
Apache HTTP Server Flaw Enables DoS and Potential RCE Attacks
A critical flaw in the Apache HTTP Server, known as CVE-2026-23918, can be exploited to launch devastating denial-of-service (DoS) and potential remote code execution (RCE) attacks, putting your online security at risk. This high-severity bug has been patched in Apache HTTP Server version 2.4.67, so updating is crucial to prevent attacks.
Critical F5 BIG-IP flaw sparks alarming surge in attacks
A critical vulnerability in F5's BIG-IP system is under active attack by hackers, posing a significant threat to the security of our digital infrastructure. With patches and mitigations urgently needed, what's at stake if this flaw isn't addressed?
Linux Kernel Vulnerability Poses Critical Threat
A critical vulnerability in the Linux kernel has been uncovered, putting users at risk of a denial of service attack, and experts are warning of potentially far-reaching consequences. This shocking flaw, found in the ATI Rage 128 driver, highlights the importance of staying vigilant in the face of evolving cybersecurity threats.
Expat Flaw Sparks Critical Vulnerability in XML Parsing
A critical vulnerability in a widely-used XML parsing library has been hiding in plain sight for over a decade, threatening to crash applications with a single, well-crafted attack. This buffer over-read issue, known as a ticking time bomb, can be exploited by context-dependent attackers to launch a devastating denial of service (DoS) attack.
Linux Kernel Flaw Poses Critical Risk
A critical flaw in the Linux kernel has been uncovered, posing a serious risk to systems worldwide by allowing local users to potentially gain elevated privileges or cause a denial of service. This vulnerability, affecting numerous Linux distributions, highlights the delicate balance between vulnerability and catastrophe in today's digital landscape.