Microsoft Windows Background Intelligent Transfer Service (BITS) Improper Privilege Management Vulnerability

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

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

58.28 %

Predictive Probability

Percentile Rank

98.1 th

Documented as more likely to be exploited than 98.1% of known CVEs.

Detection Date

Jan 28, 2022

Remediation Due

Jul 28, 2022

CISA Catalog Active

Threat Analysis

Microsoft Windows BITS is vulnerable to to a privilege elevation vulnerability if it improperly handles symbolic links. An actor can exploit this vulnerability to execute arbitrary code with system-level privileges.

Remediation Directive

Apply updates per vendor instructions.

Asset Context

Vendor Identity

Microsoft

Affected Product

Windows

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-269 CWE-59

External Intelligence

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2020-0787