Tag: dos
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CISA Adds Actively Exploited GitLab RCE and Cisco Firewall DoS Flaws to KEV
Tags: cisa, cisco, cve, cybersecurity, dos, exploit, firewall, flaw, gitlab, infrastructure, kev, rce, remote-code-execution, software, vulnerabilityThe U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added two security flaws impacting Cisco and GitLab software to its Known Exploited Vulnerabilities (KEV), citing evidence of active exploitation.The vulnerabilities are listed below – CVE-2026-97229 (CVSS score: 10.0) – An integer overflow or wraparound vulnerability in GitLab Community Edition and Enterprise First seen on…
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CISA Adds Actively Exploited GitLab RCE and Cisco Firewall DoS Flaws to KEV
Tags: cisa, cisco, cve, cybersecurity, dos, exploit, firewall, flaw, gitlab, infrastructure, kev, rce, remote-code-execution, software, vulnerabilityThe U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added two security flaws impacting Cisco and GitLab software to its Known Exploited Vulnerabilities (KEV), citing evidence of active exploitation.The vulnerabilities are listed below – CVE-2026-97229 (CVSS score: 10.0) – An integer overflow or wraparound vulnerability in GitLab Community Edition and Enterprise First seen on…
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Apache Struts Vulnerabilities Enable Remote Code Execution, DoS and Data Disclosure
Four Apache Struts vulnerabilities outlined in recent advisories expose affected applications to risks such as remote code execution, denial of service, and cross-user data disclosure. These issues impact legacy action mapping, decimal rendering, REST request processing, and localized message formatting. Fixes are available in Struts versions 7.4.0 and 6.12.0. The advisories, published between August 3…
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Citrix NetScaler SAML Vulnerability Enables Unauthenticated Remote DoS Attacks
Citrix has released emergency security updates to address a high-severity memory overflow vulnerability in NetScaler ADC and NetScaler Gateway. This flaw, tracked as CVE-2026-88779, could allow unauthenticated remote attackers to cause persistent denial-of-service conditions. The vulnerability specifically affects appliances configured for SAML authentication, whether set as a Service Provider (SP) or an Identity Provider (IdP).…
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Citrix NetScaler SAML Vulnerability Enables Unauthenticated Remote DoS Attacks
Citrix has released emergency security updates to address a high-severity memory overflow vulnerability in NetScaler ADC and NetScaler Gateway. This flaw, tracked as CVE-2026-88779, could allow unauthenticated remote attackers to cause persistent denial-of-service conditions. The vulnerability specifically affects appliances configured for SAML authentication, whether set as a Service Provider (SP) or an Identity Provider (IdP).…
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Apache Tomcat 11.0.26 Fixes 12 Security Flaws Enabling WebSocket Bypass and DoS Attacks
Apache Tomcat 11.0.26 has been released with fixes for 12 security vulnerabilities, including a significant flaw that could allow attackers to bypass security constraints protecting WebSocket endpoints. This release also addresses several denial-of-service (DoS) issues affecting WebSocket, AJP, HTTP/2, and HTTP/1.0 request handling. Dated September 15, 2026, the release addresses flaws that were publicly disclosed…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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BigDiskBuster Windows Defender DoS Vulnerability Blocks Platform and Signature Updates
A recently published proof-of-concept project named BigDiskBuster claims to prevent Microsoft Defender from completing its platform and security intelligence signature updates. This could create a potential denial-of-service condition, leaving Windows endpoints operating with outdated anti-malware protection. The project, published on GitHub by the user “MSNightmare,” is described as a >>Windows Defender Update Denial of Service…
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FreeRDP 3.31.0 Fixes 22 Security Flaws Including Heap Overflow and Pre-Auth DoS Bugs
FreeRDP version 3.31.0 has been released as a significant security and stability update, addressing 22 disclosed security vulnerabilities in the widely used open-source implementation of the Remote Desktop Protocol (RDP). Project maintainers have termed this release a “huge bug fix and security release” and strongly encourage distributors to update promptly due to the serious nature…
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Bot detection arrives in CrowdSec 1.8.0, along with two DoS fixes
Failed SSH logins pile up in an auth log, and a scanner walks a website looking for exposed admin paths. CrowdSec reads log sources and HTTP requests, works out which … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/09/01/crowdsec-1-8-0-bot-detection/
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DoS und RCE möglich – Kritischer Out-of-Bounds Write in Dell PowerStore
First seen on security-insider.de Jump to article: www.security-insider.de/dell-powerstore-sdnas-smb-luecke-cve-2026-67271-a-c0c1d9732481f80544433117011d1c2e/
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Apache Tomcat Flaws Let Attackers Bypass Authentication and Security Controls, Trigger DoS Attacks
Apache has released version 11.0.25 of Apache Tomcat to address ten security vulnerabilities, including multiple flaws that could lead to authentication bypasses, access-control evasion, and denial-of-service (DoS) conditions. The most serious issues affect Tomcat’s processing of security constraints, authentication mechanisms, HTTP/2 implementation, and behavior of the RewriteValve. All ten vulnerabilities impact releases of Apache Tomcat…
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DoS und Code-Ausführung – Drei Sandbox-Escape-Schwachstellen in vm2
First seen on security-insider.de Jump to article: www.security-insider.de/nodejs-vm2-kritische-sandbox-schwachstellen-3-11-6-a-dbeb809fe1b7770d46a302980113acd8/
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CDN Tsunami Attack Abuses HTTP/3 Translation for Up to 350x DoS Amplification
Cybersecurity researchers have disclosed two denial-of-service (DoS) attacks that exploit how major content delivery networks (CDNs) convert client-facing HTTP/3 traffic into HTTP/1.1 requests to the websites they front, amplifying a low-bandwidth request stream by up to 350x against the origin server.The attacks, collectively named “CDN Tsunami,” were evaluated against Alibaba, Baidu, First seen on thehackernews.com…
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NetScaler CVE-2026-19490 Lets Attackers Bypass Authentication
NetScaler flaws could enable authentication bypass and DoS attacks. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/netscaler-cve-2026-19490-lets-attackers-bypass-authentication/
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NetScaler CVE-2026-19490 Lets Attackers Bypass Authentication
NetScaler flaws could enable authentication bypass and DoS attacks. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/netscaler-cve-2026-19490-lets-attackers-bypass-authentication/
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Cisco Warns of Seven ClamAV Flaws, Two With Public PoCs
Cisco warns that seven ClamAV flaws affect Secure Endpoint Connector products, with two having public PoCs that could enable remote DoS attacks. Cisco warned that seven ClamAV vulnerabilities affect its Secure Endpoint Connector on Windows, macOS and Linux. ClamAV is an open-source antivirus engine widely used to scan files and emails for malware. The company…
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Django Flaws Let Attackers Trigger RCE, SSRF, DoS, and XSS Attacks
The Django project has released security updates, specifically Django 6.0.8 and Django 5.2.17, to address four vulnerabilities that could lead to server-side request forgery (SSRF), arbitrary file writes with potential for remote code execution (RCE), denial-of-service (DoS), and stored cross-site scripting (XSS) attacks. An advisory posted by Natalia Bidart on August 4, 2026, urges all…
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PHP Patches 3 Security Flaws Enabling SQL Injection, Memory Corruption and DoS Attacks
PHP maintainers have released security updates to address three vulnerabilities affecting the PostgreSQL, BCMath, and Phar extensions. These vulnerabilities could potentially lead to SQL injection attacks, out-of-bounds memory writes, and denial-of-service attacks in vulnerable applications. The issues impact several actively maintained PHP release branches and have been resolved in versions PHP 8.2.338.2, 8.3.338.3, 8.4.248.4, and…
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Next.js Patches Nine Security Flaws Enabling SSRF, Middleware Bypass, DoS, and Internal Endpoint Disclosure
The Next.js team has released security updates that address nine vulnerabilities affecting the App Router, Server Actions, rewrites, image optimization, caching, and middleware deployments. Organizations are urged to upgrade to Next.js versions 15.5.21 or 16.2.11 immediately, as these updates fix high- and moderate-severity flaws that could lead to server-side request forgery (SSRF), authentication bypass, denial…
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OpenSSL DoS Vulnerability Lets Remote Attackers Exhaust Server Memory With an 11-Byte Payload
A newly disclosed vulnerability reminds us how deeply our digital infrastructure relies on foundational libraries. The Okta Red Team recently discovered >>HollowByte,<< a Denial of Service (DoS) flaw in OpenSSL that allows a remote, unauthenticated attacker to force a server to allocate disproportionate memory chunks before any security handshake even begins, using a payload just…
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Opera GX browser vulnerability could allow data theft and DoS attacks
First seen on scworld.com Jump to article: www.scworld.com/brief/opera-gx-browser-vulnerability-allows-data-theft-and-dos-attacks
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PHP TLS Flaw Lets Remote Server Trigger DoS and Crash Entire FPM Process
A newly disclosed high-severity vulnerability in PHP, tracked as CVE-2026-12184, poses a significant risk to web applications by allowing a remotely triggerable denial-of-service (DoS) condition. This vulnerability can cause entire PHP-FPM process pools to crash. Details of the issue are outlined in the GitHub advisory GHSA-mhmq-mmqj-2v39. It affects multiple supported PHP branches, including versions before…
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Fluentd Security Flaws Enable Remote Code Execution, SSRF, DoS, and Credential Exposure
Tags: credentials, cyber, data, dos, flaw, github, open-source, remote-code-execution, service, vulnerabilityFluentd, a widely used open-source data collector for unified logging, has reported several high-impact vulnerabilities that could enable attackers to achieve remote code execution (RCE), server-side request forgery (SSRF), denial-of-service (DoS), and the exposure of sensitive credentials. These issues, documented in multiple GitHub Security Advisories, affect Fluentd versions up to 1.19.2 and have been resolved…
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Anthropic buffa Library Zero-Day Lets Attackers Trigger Memory-Amplification DoS
Anthropic’s Rust-based protobuf library, buffa, has been discovered to have a zero-day memory amplification denial-of-service (DoS) vulnerability. This flaw allows attackers to deplete system memory using relatively small inputs. Endor Labs identified the issue through its AI-powered static application security testing (SAST) engine and is now tracked as CVE-2026-55407. This situation underscores how logic flaws…
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F5 Patches NGINX Vulnerability Enabling Code Execution and DoS Attacks
F5 has released an out-of-band security notification addressing multiple high”‘severity vulnerabilities in NGINX components that can enable remote code execution (RCE) and denial”‘of”‘service (DoS) attacks in certain configurations, urging customers to patch or upgrade affected deployments immediately. On June 17, 2026, F5 issued an out-of-band security notification (K000161614) summarizing several high- and medium-severity flaws across…