Microsoft Windows CLFS Driver 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/E:F/RL:O/RC:C

Exploitation Likelihood

8.68 %

Predictive Probability

Percentile Rank

92.3 th

Documented as more likely to be exploited than 92.3% of known CVEs.

Detection Date

Apr 13, 2022

Remediation Due

May 04, 2022

CISA Catalog Active

Threat Analysis

Microsoft Windows Common Log File System (CLFS) Driver contains an unspecified vulnerability that allows for privilege escalation.

Apply updates per vendor instructions.

Vendor Identity

Microsoft

Affected Product

Windows

Ransomware Status

Campaign Use Known

Weakness Classification

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2022-24521