Secure Bulletin Navigating the cyber sea with knowledge
Home > Tag > Patch Tuesday
#Patch Tuesday

Microsoft Patch Tuesday April 2026: 168 Vulnerabilities Fixed Including Actively Exploited SharePoint Zero-Day

25 April 2026  |  dark6  |  Vulnerability

Microsoft's April 2026 Patch Tuesday fixes a record 168 vulnerabilities, including an actively exploited SharePoint zero-day (CVE-2026-32201) and a publicly disclosed Microsoft Defender privilege escalation flaw. Security teams...

>> read more

Windows Defender Triple Zero-Day: BlueHammer, RedSun, and UnDefend Actively Exploited in the Wild

22 April 2026  |  dark6  |  Vulnerability

Three critical zero-day vulnerabilities — BlueHammer (CVE-2026-33825), RedSun, and UnDefend — have been discovered in Windows Defender's remediation engine. All three allow local privilege escalation to SYSTEM level...

>> read more

Microsoft April 2026 Patch Tuesday: Actively Exploited SharePoint Zero-Day Among 167 Fixes

18 April 2026  |  dark6  |  Vulnerability

Microsoft's April 2026 Patch Tuesday patches 167 vulnerabilities including an actively exploited SharePoint Server zero-day (CVE-2026-32201) and a publicly disclosed Windows Defender race condition (CVE-2026-33825). Security teams should...

>> read more

Microsoft April 2026 Patch Tuesday: 163 CVEs Including Two Zero-Days and a Public “BlueHammer” Exploit

15 April 2026  |  dark6  |  Vulnerability

Microsoft's April 2026 Patch Tuesday addresses 163 CVEs, including an actively exploited SharePoint spoofing zero-day (CVE-2026-32201) and a publicly leaked Defender EoP exploit dubbed "BlueHammer" (CVE-2026-33825). A critical...

>> read more