CVE-2026-21510 — Microsoft Windows Shell Protection Mechanism Failure Vulnerability
2026-02-10 • CISA Known Exploited Vulnerability
[event] Microsoft Windows Shell contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | Windows |
| CWE | CWE-693 |
| CVE ID | CVE-2026-21510 |
| Date Added | 2026-02-10 |
| Due Date | 2026-03-03 |
| Ransomware Campaign | Unknown |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2026-03-03