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CVE-2022-22047

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

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

Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

CVSS 3.1 vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
PublishedJul 12, 2022
Last modifiedJun 17, 2026
Added to KEVJul 12, 2022
Remediation dueAug 2, 2022
    71
    Risk assessment · High

    Actively exploited. Patch immediately.

    Exploitation
    Confirmed in the wild (CISA KEV)
    Federal remediation deadline
    Overdue by 1546 days
    CVSS
    7.8 HIGH
    EPSS (30-day exploit probability)
    18.8% · top 3% of all CVEs
    Weakness
    CWE-426
    1. 1.Apply updates per vendor instructions.
    2. 2.Treat as emergency change: patch or isolate internet-facing instances first.
    3. 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

    Assessment is derived automatically from the live signals above; verify against your own asset inventory.