CVE-2026-21510

Summary dbcve.org

A protection mechanism failure in Windows Shell enables an unauthenticated attacker to bypass a security feature via network attack vector. The vulnerability stems from improper validation or enforcement of security controls within the Windows Shell component, allowing circumvention of intended protections.

Mitigation

Apply Microsoft security updates for Windows Shell when released. Until then, implement network segmentation and restrict unauthorized users from accessing affected Windows systems remotely.