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Incomplete Windows Patch Opens Door to Zero-Click Attacks

The initial vulnerability was exploited by Russia-linked APT28 in attacks against Ukraine and EU countries. The post Incomplete Windows Patch Opens Door to Zero-Click Attacks appeared first on SecurityWeek.

Incomplete patch for a Windows SmartScreen and Windows Shell security prompts bypass created a new bug enabling zero-click attacks, Akamai reports.

The initial vulnerability, tracked as CVE-2026-21510 and patched in February, could be exploited for remote code execution (RCE) if the attacker could convince the victim to open a malicious shortcut file.

Microsoft warned at the time that the flaw had been exploited as a zero-day, without providing details on the observed attacks.

Source: https://www.securityweek.com/incomplete-windows-patch-opens-door-to-zero-click-attacks/

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