Microsoft Win32k Privilege Escalation Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

HIGH

7 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

94.15 %

Predictive Probability

Percentile Rank

99.9 th

Documented as more likely to be exploited than 99.9% of known CVEs.

Detection Date

Mar 15, 2022

Remediation Due

Apr 05, 2022

CISA Catalog Active

Threat Analysis

A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory.

Apply updates per vendor instructions.

Vendor Identity

Microsoft

Affected Product

Win32k

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-404

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2018-8120