known ransomware use

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

Added to KEV
2022-01-28
Federal due date
2022-07-28
Vendor
Microsoft
Product
Windows
EPSS
98.3th percentile (score 0.593, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2020-0787

CISA short description

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.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.