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Microsoft fixes exploited Mark of the Web bypass vulnerability (CVE-2026-96951)

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Microsoft fixes exploited Mark of the Web bypass vulnerability (CVE-2026-96951)

Microsoft patched over 1,400 security bugs in October 2026 Patch Tuesday, including CVE-2026-96951, a command injection vulnerability in Windows Shell that bypasses Mark of the Web protections. The flaw allows remote attackers to execute commands via specially crafted files delivered through email, instant messaging, or collaboration platforms, and is already exploited in the wild.

Why it matters: Organizations running Windows systems must prioritize this CVE-2026-96951 patch immediately, as attackers are actively exploiting it through common delivery vectors like email and Teams to achieve remote code execution.

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