Glossary
DoS
Denial of Service — An attack that attempts to make a system, service, or network unavailable to legitimate users, typically by overwhelming it with traffic or exploiting a resource-exhaustion flaw, from a single source. A DDoS attack pursues the same goal from many distributed sources simultaneously.
// Recent coverage mentioning DoS
HollowByte DDoS: OpenSSL Memory Exhaustion via 11-byte Payload
HollowByte enables unauthenticated DoS on OpenSSL servers, depleting memory with an 11-byte payload. Understand the impact and mitigation.
CVE-2026-11317: Rockwell Logix DoS via CIP — Patch Critical ICS
Critical Manufacturing faces high-severity DoS risk in Rockwell Automation Logix 5370 & 5570 controllers from CVE-2026-11317. Patch now.
Cisco Crosswork & NSO DoS: Manual Reboot Needed Post-Exploit
Cisco Crosswork Network Controller and Network Services Orchestrator are vulnerable to a denial-of-service flaw, necessitating manual reboots for recovery.
ABB B&R Automation Runtime DoS via CVE-2025-11044 — Patch Now
An unauthenticated network DoS vulnerability (CVE-2025-11044) affects ABB B&R Automation Runtime, allowing permanent system halts. Immediate patching is critical.
OpenSSL: Data Leakage & DoS Vulnerabilities Patched
OpenSSL patches seven vulnerabilities, including a data leakage flaw and multiple denial-of-service risks. Update immediately to secure cryptographic communications.
Mitsubishi Electric ICS Vulnerabilities Expose SQL Credentials
High-severity vulnerabilities (CVE-2025-14815, CVE-2025-14816) in Mitsubishi Electric ICS/SCADA products risk SQL credential exposure and data compromise.