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Posted on • Originally published at scyscan.com

CVE-2026-21525: Microsoft Windows NULL Pointer Dereference Vulnerability

CVE ID

CVE-2026-21525

Vulnerability Name

Microsoft Windows NULL Pointer Dereference Vulnerability

  • Project: Microsoft
  • Product: Windows

Date

  • Date Added: 2026-02-10
  • Due Date: 2026-03-03

Description

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

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21525 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21525

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