CVE-2021-1675
Published: November 3, 2021
Official Description
Microsoft Windows Print Spooler contains an unspecified vulnerability that allows for remote code execution.
CISA KEV Advisory
Microsoft Windows Print Spooler Remote Code Execution Vulnerability
Microsoft Windows Print Spooler contains an unspecified vulnerability that allows for remote code execution.
Apply updates per vendor instructions.
Risk Analysis
This unspecified vulnerability in Microsoft Windows Print Spooler allows for remote code execution. The very high EPSS score of 0.94314 indicates a significant likelihood of exploitation, making this an urgent concern for Windows systems.
This vulnerability is actively exploited in the wild and is included in CISA's KEV catalog. This confirms that threat actors are leveraging this flaw for malicious purposes.
Apply the latest security patches from Microsoft for Windows Print Spooler. Consider disabling the Print Spooler service on servers where it is not essential.
Technical Analysis
CVE-2021-1675 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-1675 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-1675 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1