ED 21-04, Mitigate Windows Print Spooler Service Vulnerability
RetiredCISA · Emergency Directive · July 13, 2021
Summary
Required agencies to turn off the Windows Print Spooler service on domain controllers, apply Microsoft's July 2021 updates, and make one of three configuration changes on other Windows systems to block a remote code execution flaw.
What FedXchange has recorded
No changes recorded. The watch records a new document and any change in its status.
- Issuer
- Cybersecurity and Infrastructure Security Agency (CISA)
- Type
- Emergency Directive
- Number
- ED 21-04
- Issued
- July 13, 2021
- Status
- Retired
Closed by its issuer (CISA's term for a directive that has done its job).
Retired by CISA on January 8, 2026, which found its required actions complete or covered by BOD 22-01.
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