🔥 This vulnerability is being actively exploited in the wild (CISA Known Exploited Vulnerabilities catalog)
CVE-2026-21510: Microsoft Windows Shell Protection Mechanism Failure Vulnerability
infovulnerability🔥 Actively Exploited
security
Summary
Microsoft Windows Shell has a vulnerability that lets attackers bypass a security feature over a network without authorization. This flaw is currently being exploited by real attackers, making it an active threat.
Solution / Mitigation
Apply mitigations per Microsoft's vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vulnerability Details
EPSS (30-day exploit probability)
EPSS: 3.8%
Exploit Maturity
🔥 Actively Exploited
Classification
Attack SophisticationModerate
Taxonomy References
CWE (Weakness Type)
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-21510
First tracked: February 12, 2026 at 02:20 PM
Classified by LLM (prompt v3) · confidence: 95%