Back Ground.News Microsoft Desktop Window Manager 0-Day Vulnerability Exploited in the wild
Windows administrators just got a reality check for the new year. As of Wednesday, January 14, 2026, Microsoft’s first “Patch Tuesday” has dropped a massive fix for a zero-day vulnerability that’s already being used in active attacks. The thing is, the bug (tracked as CVE-2026-20805) lives in the Desktop Window Manager (DWM)—that’s the engine that makes your windows look pretty. Or nothing. Let’s be real, while a CVSS score of 5.5 sounds “medium…
Microsoft patched a critical zero-day information disclosure flaw in its Desktop Window Manager (DWM) on January 13, 2026, in the Patch Tuesday update after detecting active exploitation in the wild. Tracked as CVE-2026-20805, the vulnerability allows low-privilege local attackers to expose sensitive user-mode memory, specifically section addresses, via remote ALPC ports. This could aid further […] The post Microsoft Desktop Window Manager 0-Day…
Microsoft patched a critical zero-day information disclosure flaw in its Desktop Window Manager (DWM) on January 13, 2026, in the Patch Tuesday update after detecting active exploitation in the wild. Tracked as CVE-2026-20805, the vulnerability allows low-privilege local attackers to expose sensitive user-mode memory, specifically section addresses, via remote ALPC ports. This could aid further privilege escalation chains in real-world attacks, …
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