February 10, 2026 · Applied Cybernetics Group
CVE-2026-21525 — Microsoft Windows
Microsoft Windows NULL Pointer Dereference Vulnerability
- Added to KEV
2026-02-10- Federal due date
2026-03-03- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 91.2th percentile (score 0.050, as of
2026-07-13) - NVD CVSS v3.1
- 6.2 (MEDIUM)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-21525
CISA short 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.
NVD description
Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.