Microsoft Patch Tuesday for February 2026 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for February 2026, which includes 59 vulnerabilities affecting a range of products, including two that Microsoft marked as "Critical". CVE-2026-21522 is a critical elevation of privilege vulnerability affecting Microsoft ACI Confidential...

KB5075912: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (February 2026)

The remote Windows host is missing security update 5075912. It is, therefore, affected by multiple vulnerabilities - Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-21513 - Access of resource using incompatible...

KB5075899: Windows Server 2025 Security Update (February 2026)

The remote Windows host is missing security update 5075899. It is, therefore, affected by multiple vulnerabilities - Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-21513 - Access of resource using incompatible...

KB5077181: Windows 11 Version 24H2 / Windows 11 Version 25H2 Security Update (February 2026)

The remote Windows host is missing security update 5077181. It is, therefore, affected by multiple vulnerabilities - Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-21513 - Access of resource using incompatible...

KB5075970: Windows Server 2012 R2 Security Update (February 2026)

The remote Windows host is missing security update 5075970. It is, therefore, affected by multiple vulnerabilities - Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-21513 - Heap-based buffer overflow in Microso...