Gbhackers
Critical Zero-Day Vulnerability in Windows Desktop Window Manager Exploited
First seen 11 Feb 2026, 19:30 UTC
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Microsoft has issued urgent security updates for a critical zero-day vulnerability in the Windows Desktop Window Manager (DWM), tracked as CVE-2026-21519. This flaw is actively being exploited, enabling attackers to gain full control over affected systems. Users of Windows operating systems are urged to apply the updates immediately to mitigate risks.
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Timeline
2026-02-10
CVE-2026-21519 published
2026-02-10
CVE-2026-21519 added to CISA KEV (active exploitation)
2026-02-11
Microsoft releases security updates for DWM