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Microsoft Patches Windows Shell Zero-Day (CVE-2026-96951) Exploited to Bypass Mark of the Web
Cybersecurity

Microsoft Patches Windows Shell Zero-Day (CVE-2026-96951) Exploited to Bypass Mark of the Web

Microsoft released an urgent patch in the October 2026 Patch Tuesday cycle to address an actively exploited Windows Shell zero-day that allows attackers to bypass Mark of the Web (MOTW) protections. Tracked as CVE-2026-96951 and rated Important with a CVSS score of 8.8, Microsoft confirmed exploitation had already occurred when the update shipped. The vendor’s “Exploitation Detected” assessment raises this from a theoretical risk to an immediate operational concern for…

Saugata Datta4 min read184
Micropatches for Windows Shell Bypass (CVE-2026-21510): What 0patch Fixed and Why It Matters
Cybersecurity

Micropatches for Windows Shell Bypass (CVE-2026-21510): What 0patch Fixed and Why It Matters

Microsoft released fixes earlier this year for CVE-2026-21510, a security feature bypass in Windows Explorer that let specially crafted shortcut (LNK) files execute a remotely hosted DLL without the usual security warning. Researchers observed exploitation in the wild and uploaded a sample to malware repositories, enabling vendors and defenders to reproduce the issue and protect legacy systems that no longer receive timely official updates. This post explains how the vulnerability…

Saugata Datta4 min read465
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