Microsoft Win32k Privilege Escalation Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

7.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

69.17 %

Predictive Probability

Percentile Rank

98.6 th

Documented as more likely to be exploited than 98.6% of known CVEs.

Detection Date

Mar 28, 2022

Remediation Due

Apr 18, 2022

CISA Catalog Active

Threat Analysis

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft does not properly initialize a pointer for the next object in a certain list, which allows local users to gain privileges.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2013-3660