ACTIVELY EXPLOITED

CVE-2022-22047: Microsoft Windows Client Server Runtime Subsystem (CSRSS) Privilege Escalation Vulnerability

Facts
VendorMicrosoft
ProductWindows
Actively exploitedYes
Added to CISA KEV12 Jul 2022
CISA federal deadline2 Aug 2022
Weakness (CWE)CWE-426

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

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

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.