CVE-2022-22718 is a print spooler privilege escalation vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalogue on 19 April 2022, which means attackers have used it in real attacks. Microsoft Windows Print Spooler contains an unspecified vulnerability which allow for privilege escalation.
What Makes a Print Spooler Privilege Escalation Dangerous
A print spooler privilege escalation is dangerous because the spooler runs as a trusted Windows service and sits close to core system and driver workflows. When attackers can exploit that trust boundary, a low-privileged foothold can become a path to elevated system access.
The practical risk is not just that the vulnerable component exists, but that it is widely deployed and often reachable from normal enterprise endpoints. A flaw in a central service can therefore turn an ordinary user compromise into a much more serious internal compromise.
How Organisations Determine Exposure to This CVE
Exposure checks start with asset inventory: identify which Windows systems have the print spooler enabled, where it is exposed, and which endpoints or servers actually need the service. For a CVE like this, teams should use vendor advisory details and the NIST National Vulnerability Database to confirm the affected scope, then compare that to their own estate.
Because CISA placed CVE-2022-22718 in the KEV catalogue, organisations should treat it as an exploitation-driven exposure, not a theoretical one. The most important question is whether vulnerable systems are internet-facing, reachable from untrusted internal segments, or present on high-value administrative workstations and servers.
For broader context on how exploitation patterns are tracked, the CVE Program defines the record format, while the KEV listing tells defenders why the issue needs operational attention now rather than later.
Remediation and Compensating Controls
The preferred response is to apply the vendor fix as soon as the approved patch path is available. If patching cannot happen immediately, reduce exposure by disabling the spooler wherever printing is not required, limiting who can reach affected hosts, and tightening endpoint hardening around administrative systems.
Where organisations need a broader prioritisation model for active vulnerabilities, NHIMG’s Vulnerability Management Guide is useful because it ties KEV-driven prioritisation to asset scope, remediation SLAs, and exception handling. That is especially relevant when a flaw is already being used in the wild.
For this class of issue, compensating controls matter because privilege escalation often becomes the step that turns a local compromise into domain-wide access. Restricting where the print spooler runs is often more effective than waiting for a user to notice something is wrong.
Detection and Post-Exploitation Review
After patching, defenders should still review for signs that the vulnerability was used before the fix landed. That means checking for unusual service behaviour, suspicious child processes, new administrative activity, and any signs that an attacker used the printer service as a bridge to higher privilege.
The MITRE ATT&CK Enterprise Matrix is the right reference point for thinking about this phase of the intrusion, because privilege escalation is rarely the end goal. It is usually a step toward persistence, credential access, lateral movement, or deeper system control.
If exploitation is suspected, review nearby endpoints and any accounts that may have been used on the affected system. Post-patch validation should confirm not only that the vulnerability is fixed, but also that no attacker left behind a follow-on foothold.
Risk and Threat Considerations
This CVE matters because privilege escalation changes the attacker’s operating level. A compromise that begins with limited access can quickly become a much more serious incident when the print spooler provides a route to higher privileges on the same host.
Failure mechanism: An attacker first gains a foothold, then abuses the vulnerable spooler path to execute actions with greater privilege, which can expose credentials, tamper with system state, or enable lateral movement.
Impact: The result can be full host compromise, faster spread across the environment, and a significantly harder incident response because the attacker no longer needs to remain constrained by the original low-privilege account.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5 and CIS Controls v8 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | SI-2 — Flaw Remediation | Privilege-escalation CVEs require timely remediation of identified software flaws. |
| CM-7 — Least Functionality | Disabling unneeded services directly reduces exposure from the Windows print spooler. | |
| RA-5 — Vulnerability Monitoring and Scanning | Exposure to an exploited CVE depends on knowing where the vulnerable service is deployed. | |
| Recommendation — Prioritise and remediate the spooler flaw under SI-2 before attackers can escalate privileges. Apply CM-7 to disable the print spooler where printing is not required. Use RA-5 to inventory affected systems and verify where the spooler remains exposed. | ||
| CIS Controls v8 | CIS-7 — Continuous Vulnerability Management | KEV-listed exploitation makes continuous prioritisation and remediation essential. |
| Recommendation — Use CIS-7 to prioritise and close exploited spooler exposure quickly. | ||
Practitioner Guidance
Why practitioners should care: Treat print spooler privilege escalation as a host hardening and exposure-management issue, not just a patch item. The service should exist only where printing is genuinely needed, especially on servers and administrative workstations.
What to watch for: Pay attention to systems that retain unnecessary spooler exposure, especially if they are high-value or broadly reachable. In environments with repeated endpoint compromise, a single privilege escalation flaw can make containment much more difficult.
Practitioner takeaway: The safest posture is to remove unnecessary spooler exposure, patch quickly, and verify whether any pre-patch compromise occurred before declaring the issue closed.
Related resources from NHI Mgmt Group
- CVE-2022-38028 (Microsoft Windows Print Spooler Privilege Escalation Vulnerability)
- CVE-2022-41073 (Microsoft Windows Print Spooler Privilege Escalation)
- CVE-2022-41125 (Microsoft Windows CNG Key Isolation Service Privilege Escalation)
- CVE-2022-41033 (Microsoft Windows COM+ Event System Service Privilege Escalation)