CVE Vulnerability Advisory Database
Filter vulnerabilities by CVSS severity, active CISA KEV exploitation, and technology stack.
Cisco ASA and FTD SSL VPN Remote Denial of Service Vulnerability (CVE-2026-76418)
[Affected Scope] Cisco ASA and FTD Software with Remote Access SSL VPN enabled and secondary authentication configured.
[Impact] Unauthenticated remote attackers can trigger an unexpected device reload, leading to a complete Denial of Service (DoS) of VPN services.
[Mitigation] Apply the latest security patches from Cisco immediately; review secondary authentication configurations if patching is delayed.
Security Advisory for NetScaler ADC and Gateway Denial of Service (DoS) Vulnerability (CVE-2026-88779)
[Affected Scope] NetScaler ADC and Gateway versions prior to 14.1-73.41 and 13.1-64.28.
[Impact] Unauthenticated remote attackers can cause a Denial of Service (DoS) and system crash by sending specially crafted packets.
[Mitigation] Immediately apply the latest security patches provided by Citrix.
MikroTik RouterOS Authentication Bypass, Kernel Panic, and Info Leak (CVE-2026-67277) Security Advisory
[Affected Scope] MikroTik RouterOS versions 6.x and 7.x prior to specific patched releases.
[Impact] Unauthenticated attackers can exploit the bandwidth test (btest) feature to leak kernel memory or cause a Denial of Service (DoS) via kernel restart.
[Mitigation] Apply security patches (6.49.21, 7.23.4, 7.24.2 or later) and disable the bandwidth test server.
Cisco ASA and FTD SSL VPN Remote Denial of Service Vulnerability (CVE-2026-20349)
[Affected Scope] Cisco Secure Firewall ASA and FTD Software with Remote Access SSL VPN service enabled
[Impact] Unauthenticated, remote attackers can cause an unexpected device reload, leading to a complete Denial of Service (DoS) condition
[Mitigation] Immediately upgrade to the patched software versions recommended in the Cisco Security Advisory
Citrix NetScaler ADC and Gateway Memory Overflow Vulnerability (CVE-2026-8452) Critical Security Advisory
[Affected Scope] Citrix NetScaler ADC and NetScaler Gateway appliances configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
[Impact] Unauthenticated remote attackers can trigger a memory overflow, leading to unpredictable behavior, Denial of Service (DoS), or potential Remote Code Execution (RCE)
[Mitigation] Immediately apply the official security patches provided by Citrix and restrict external access to affected virtual servers
SolarWinds Serv-U Unauthenticated Remote Denial of Service (DoS) Vulnerability (CVE-2026-28318) Analysis and Mitigation Guide
[Affected Scope] SolarWinds Serv-U file transfer server versions prior to 15.5.4 Hotfix 1
[Impact] Unauthenticated remote attackers can crash the Serv-U service instantly by sending specially crafted HTTP POST requests utilizing 'Content-Encoding: deflate'
[Mitigation] Immediately apply the official security patch (15.5.4 Hotfix 1 or later) or implement WAF rules to block specific compression headers
Microsoft Defender Remote Denial of Service (DoS) Vulnerability (CVE-2026-45498) Technical Advisory
[Affected Scope] All Windows and Windows Server systems utilizing the Microsoft Defender Antimalware Engine.
[Impact] Unauthenticated remote attackers can crash the real-time protection engine, disabling endpoint security defenses and leaving the system exposed to subsequent attacks.
[Mitigation] Immediately update the Microsoft Defender engine to the latest version (1.1.24000.0 or higher) and verify automatic update configurations.
Windows Remote Access Connection Manager (RasMan) Null Pointer Dereference Local DoS Vulnerability (CVE-2026-21525) Technical Advisory
[Affected Scope] Windows and Windows Server operating systems utilizing the Windows Remote Access Connection Manager (RasMan) service.
[Impact] An unauthorized local attacker can trigger a Null Pointer Dereference in the RasMan service, causing a local Denial of Service (DoS) by crashing the service or the entire system.
[Mitigation] Apply the latest Microsoft cumulative security updates immediately, or disable the RasMan service if remote access features are not required.
Cisco Secure ASA and FTD VPN Web Server Authentication Bypass and DoS Vulnerability (CVE-2025-20362)
[Affected Scope] Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software with Remote Access VPN enabled
[Impact] Unauthenticated remote attackers can bypass authentication to access restricted VPN-related URL endpoints, and active exploit variants can trigger unexpected device reloads, causing a complete Denial of Service (DoS)
[Mitigation] Immediately upgrade to the fixed software releases recommended in the official Cisco Security Advisory
Palo Alto Networks PAN-OS DNS Security Denial of Service and Infinite Reboot Loop Vulnerability (CVE-2024-3393) Analysis and Mitigation Guide
[Affected Scope] Palo Alto Networks PAN-OS software versions with the DNS Security feature enabled
[Impact] An unauthenticated remote attacker can send malicious packets through the data plane, causing the firewall to reboot. Repeated exploitation forces the device into maintenance mode, leading to a complete network outage
[Mitigation] Immediately upgrade PAN-OS to the patched versions recommended by the vendor, and review DNS Security profile configurations as a temporary measure
Cisco ASA and FTD Remote Access VPN (RAVPN) Resource Exhaustion Denial of Service Vulnerability (CVE-2024-20481) Security Advisory
[Affected Scope] Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software with Remote Access VPN (RAVPN) service enabled
[Impact] Unauthenticated, remote attackers can exhaust system resources by flooding VPN authentication requests, leading to a Denial of Service (DoS) of the RAVPN service and potentially requiring a device reload
[Mitigation] Apply official Cisco security patches immediately, configure connection rate limiting, and block malicious brute-force IP addresses
Citrix NetScaler ADC and Gateway Memory Buffer Bounds Restriction Vulnerability (CVE-2023-6549) Analysis and Mitigation Guide
[Affected Scope] Citrix NetScaler ADC and NetScaler Gateway appliances running vulnerable firmware versions
[Impact] Unauthenticated remote attackers can trigger a Denial of Service (DoS) state or perform Out-Of-Bounds Memory Reads to access sensitive data
[Mitigation] Immediately upgrade to the latest patched firmware versions recommended by Citrix and restrict external access
KNX Devices BCU Key Lockout Vulnerability (CVE-2023-4346) Analysis and Mitigation Guide
[Affected Scope] KNX-based smart home and building automation devices supporting KNX Connection Authorization and Option 1
[Impact] Attackers can set an unauthorized BCU key via network or physical access, permanently locking and bricking the device (Denial of Service)
[Mitigation] Restrict network exposure of KNX IP interfaces, enable KNX Secure features, and enforce strict physical access controls
Microsoft .NET and Visual Studio Remote Denial of Service Vulnerability (CVE-2023-38180) Analysis & Mitigation Guide
[Affected Scope] .NET 6.0, .NET 7.0, ASP.NET Core, and Microsoft Visual Studio 2022 environments
[Impact] Unauthenticated remote attackers can trigger resource exhaustion (CPU/Memory) via crafted HTTP requests, leading to a complete Denial of Service (DoS)
[Mitigation] Immediately update the .NET SDK/Runtime and Visual Studio to the latest patched versions
Arm Trusted Firmware-M (TF-M) Security Domain Bypass and Denial of Service Vulnerability (CVE-2021-27562)
[Affected Scope] Arm Trusted Firmware-M (TF-M) versions up to and including 1.2, deployed on IoT and embedded hardware
[Impact] Non-secure world (NSPE) attackers can trigger system halts, overwrite secure data, or leak sensitive secure domain information
[Mitigation] Upgrade the TF-M source code to a patched version (v1.3.0 or higher), rebuild, and flash the firmware
Qualcomm Snapdragon GPU Address Deregistration Failure Denial of Service Vulnerability (CVE-2021-1906)
[Affected Scope] Android and embedded devices powered by Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, Mobile, Voice & Music, and Wearables chipsets
[Impact] A local attacker can trigger GPU memory allocation failures, leading to system resource exhaustion and a complete Denial of Service (DoS) on the affected device
[Mitigation] Apply the official security patches released by Qualcomm and device OEMs (Samsung, Google, etc.) in or after May 2021
Cisco IOS XR DVMRP Memory Exhaustion and IGMP Process Crash Vulnerability (CVE-2020-3569) Analysis & Mitigation Guide
[Affected Scope] Cisco IOS XR Software with the Distance Vector Multicast Routing Protocol (DVMRP) feature enabled
[Impact] An unauthenticated, remote attacker can cause an immediate crash of the IGMP process or exhaust system memory, leading to instability in critical routing protocols and denial of service (DoS)
[Mitigation] Apply official Cisco software updates, disable DVMRP multicast routing where not required, or implement IGMP packet filtering ACLs
Fortinet FortiOS & FortiProxy SSL VPN Heap Buffer Overflow Vulnerability (CVE-2018-13383) Technical Advisory
[Affected Scope] FortiOS versions 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier, and FortiProxy versions 2.0.0, 1.2.8 and earlier with SSL VPN web portal enabled
[Impact] Remote attackers can trigger a heap buffer overflow by forcing the proxy to process malicious javascript href data, leading to the termination of the SSL VPN web service and disconnection of active user sessions
[Mitigation] Immediately upgrade FortiOS and FortiProxy firmware to patched versions, or temporarily disable the SSL VPN web portal feature and restrict access to trusted source IPs
Cisco ASA and FTD Web Interface Path Traversal and Denial of Service Vulnerability (CVE-2018-0296) Technical Advisory
[Affected Scope] Cisco ASA Software and Cisco FTD Software running on devices with enabled web interfaces (SSL VPN, AnyConnect, Clientless Portal, etc.)
[Impact] Unauthenticated, remote attackers can trigger an unexpected device reload (DoS) or view sensitive system information without authentication via directory traversal
[Mitigation] Apply official software updates from Cisco immediately, restrict web interface access using ACLs, or disable unnecessary HTTP services
Cisco IOS Software Login Enhancements Remote Denial of Service Vulnerability (CVE-2018-0180)
[Affected Scope] Cisco devices running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later with Login Enhancements (Login Block) enabled
[Impact] An unauthenticated, remote attacker can trigger an unexpected system reload, leading to a complete Denial of Service (DoS) condition
[Mitigation] Apply the official Cisco IOS software updates, or temporarily disable the 'login block-for' feature and restrict virtual terminal (vty) access using infrastructure ACLs