Microsoft Windows Improper Privilege Management Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

7.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

22.71 %

Predictive Probability

Percentile Rank

95.9 th

Documented as more likely to be exploited than 95.9% of known CVEs.

Detection Date

Feb 10, 2026

Remediation Due

Mar 03, 2026

CISA Catalog Active

Threat Analysis

Microsoft Windows Remote Desktop Services contains an improper privilege management vulnerability that could allow an authorized attacker to elevate privileges locally.

Remediation Directive

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

External Intelligence

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21533

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-21533