Microsoft is publishing 55 vulnerabilities this February 2026 Patch Tuesday. Microsoft is aware of exploitation in the wild for six of today’s vulnerabilities, and notes public disclosure for three of those. Earlier in the month,
All three of the publicly disclosed zero-day vulnerabilities published today are security feature bypasses, and Microsoft acknowledges the same cast of reporters in each case. CVE-2026-21510 describes a zero-day Windows Shell security feature bypass vulnerability which is already exploited in the wild.
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Source: Rapid7
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