CVE Watch—

CVE-2026-21510

Microsoft Windows Shell Protection Mechanism Failure Vulnerability

CVSS

—

Sin CVSS

EPSS

25.8%

p98

KEV

SÍ

10 feb 2026

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

25.8%EPSS · 30 días25.8%

2026-06-302026-07-16

Ficha del catálogo KEV

Producto

Microsoft / Windows

Vulnerabilidad

Microsoft Windows Shell Protection Mechanism Failure Vulnerability

Añadido a KEV

10 feb 2026

Remediar antes de

3 mar 2026

Uso conocido en ransomware

Descripción resumida

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

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21510 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21510

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