Actively exploited in the wild
Microsoft Windows Shell Protection Mechanism Failure Vulnerability
Microsoft - Windows · Listed in the CISA KEV since 2026-02-10. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CVE-2026-21510
HighCVSS 8.8KEVSummary
Awaria mechanizmu ochrony w Windows Shell umożliwia nieautoryzowanemu atakującemu ominięcie funkcji zabezpieczeń w sieci.
Risk Assessment
Organizacja może być narażona na ataki, które wykorzystują lukę do uzyskania dostępu do systemów i danych bez odpowiednich uprawnień.
Recommendation
Zaleca się aktualizację systemu Windows oraz monitorowanie i wzmocnienie zabezpieczeń sieciowych, aby zminimalizować ryzyko wykorzystania tej podatności.
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Original NVD description (English source)
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.