Critical Microsoft Vulnerability Patched: CVE-2025-68476

Microsoft has patched a critical security flaw tracked as CVE-2025-68476. This vulnerability impacts multiple Windows versions and Microsoft products. Successful exploitation could enable remote code execution. Attackers might gain system control without user interaction.

CVE-2025-68476 carries a CVSS v3.1 base score of 9.8 (Critical). The vulnerability exists in core Windows components. Affected systems include Windows 10 versions 1809 through 22H2. Windows Server 2019 and 2022 installations are also vulnerable. Microsoft 365 applications may require updates.

Microsoft confirmed active exploitation attempts in limited attacks. Unpatched systems risk complete compromise. Data theft and ransomware deployment are possible outcomes. Network-accessible services present the highest attack surface.

Apply security updates immediately through official channels. Enterprise administrators should prioritize these deployments:

1. Run Windows Update on all endpoints
2. Verify installation of KB5035845 (or later)
3. Check Microsoft 365 application versions
4. Monitor Microsoft Security Update Guide for revisions

Microsoft's Security Response Center released the patch on March 15, 2025. The update addresses memory corruption issues through input validation improvements. No known workarounds exist besides patching. Enable automatic updates where possible.

Review Microsoft's official advisory for technical details. Security teams should scan networks for unpatched systems. Isolate critical assets until updates are verified.