Microsoft Patch Tuesday for April 2026 - Snort Rule and Prominent Vulnerabilities

Microsoft's April 2026 security update addresses 165 vulnerabilities across many products, including eight critical flaws (RCEs, use-after-free, double-free, and security-bypass issues). Talos highlights several high-risk CVEs—some allowing remote code execution, DoS, or local code execution—and notes at least one SharePoint vulnerability has been seen exploited in the wild; Talos released Snort rules and recommends applying updates and network mitigations (e.g., blocking IKE UDP ports if unused).