CVE-2026-21525
Microsoft Windows NULL Pointer Dereference Vulnerability
CVSS
—
No CVSS
EPSS
4.8%
p92
KEV
YES
Feb 10, 2026
Exploit Today
78
0-100
Published: — · Last modified: —
Product
Microsoft / Windows
Vulnerability
Microsoft Windows NULL Pointer Dereference Vulnerability
Added to KEV
Feb 10, 2026
Remediate by
Mar 3, 2026
Known ransomware use
No
Summary 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
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21525 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21525