Microsoft Windows Privilege Escalation Vulnerability

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

Technical Severity

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

75.64 %

Predictive Probability

Percentile Rank

98.9 th

Documented as more likely to be exploited than 98.9% of known CVEs.

Detection Date

Mar 28, 2022

Remediation Due

Apr 18, 2022

CISA Catalog Active

Threat Analysis

An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC).

Apply updates per vendor instructions.

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2018-8440