CVE-2026-21525 MEDIUM

CVE-2026-21525: Windows Remote Access Connection Manager Denial of Service Vulnerability

Vendor Microsoft
Product Windows 10 Version 1607
Weakness CWE-476
KEV Status Known Exploited
Published February 10, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

6.2/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.

CISA mandated remediation

02CISA 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.

Key dates

03Disclosure timeline

February 10, 2026 CVE published
May 11, 2026 Record updated