CVE-2022-38028: Microsoft Windows Print Spooler Privilege Escalation Vulnerability
What It Is — The Print Spooler service in Microsoft Windows contains a privilege‑escalation flaw that allows an attacker to modify a JavaScript constraints file and have it executed with SYSTEM‑level rights.
Exploitability — Publicly disclosed; proof‑of‑concept code is available and the vulnerability scores 8.8 CVSS v3.1 (Critical).
Affected Products — Windows 10 (1903 and later), Windows Server 2016, 2019, and 2022 editions where the Print Spooler service is enabled.
Why It Matters for Trust & Control Assurance
- Privileged‑access controls: The flaw bypasses least‑privilege safeguards, highlighting the need for continuous verification that only authorized accounts can obtain SYSTEM rights.
- Patch‑management evidence: Demonstrating timely deployment of Microsoft’s security update is a concrete audit artifact for control‑assurance programs.
- Defensible monitoring: Detecting anomalous Print Spooler activity provides real‑time evidence that privileged‑access policies are being enforced, a requirement many buyers now request during security reviews.
Recommended Actions
- Deploy Microsoft’s security update for CVE‑2022‑38028 immediately.
- If the Print Spooler is not required, disable the service via Group Policy or the “Stop‑Print‑Spooler” script.
- Enable Windows Event Logging for Print Spooler (Event ID 307) and integrate logs into a SIEM for continuous monitoring.
- Conduct a privileged‑access review to confirm that no non‑admin accounts have SYSTEM‑level execution rights.
- Document patch‑deployment dates and monitoring configurations as evidence for audit readiness.
Source: CISA KEV – CVE‑2022‑38028