CVE-2026-21510 — Microsoft Windows Shell Protection Mechanism Failure Vulnerability

Description

Microsoft Windows Shell contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.

How to fix CVE-2026-21510

No package mapping is available — consult the references below for vendor-specific guidance.

Is CVE-2026-21510 being exploited?

Yes — CVE-2026-21510 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.

Affected packages (0)

No package mapping in OSV.