Microsoft Windows Client Server Runtime Subsystem (CSRSS) Privilege Escalation Vulnerability

Added to KEV
2022-07-12
Federal due date
2022-08-02
Vendor
Microsoft
Product
Windows
EPSS
79.2th percentile (score 0.012, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2022-22047

CISA short description

Microsoft Windows CSRSS contains an unspecified vulnerability that allows for privilege escalation to SYSTEM 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.