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CVE-2026-21525

KEV

Microsoft Windows NULL Pointer Dereference Vulnerability

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Vendor / Project
Microsoft
Product
Windows
Date added
Feb 10, 2026
Due date
Mar 3, 2026
Known ransomware use
Unknown
CWEs
CWE-476

Description

Microsoft Windows Remote Access Connection Manager contains a NULL pointer dereference that could allow an unauthorized attacker to deny service locally.

Required action

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

Notes