# CVE-2026-45498

> Microsoft Defender Denial of Service Vulnerability

- **CVSS:** 4 (MEDIUM)
- **EPSS:** 4.1%
- **CISA KEV:** yes (known ransomware use)
- **CWE:** CWE-400

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-45498
Full threat coverage + IOCs via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp