UNKNOWNKNOWN EXPLOITEDRANSOMWARE: KNOWN

CVE-2021-34527

Microsoft Windows Print Spooler Remote Code Execution Vulnerability

Published: 2021-11-03
Modified: 2026-07-31
Sources: cisa-kev

Summary

Microsoft Windows Print Spooler contains an unspecified vulnerability due to the Windows Print Spooler service improperly performing privileged file operations. Successful exploitation allows an attacker to perform remote code execution with SYSTEM privileges. The vulnerability is also known under the moniker of PrintNightmare.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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