CVE-2021-34527 — Microsoft Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-34527: Microsoft Windows Print Spooler Remote Code Execution Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2021-11-03 |
| Due date | 2022-05-03 |
| Ransomware campaign use | Known |
Description
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.
Required action (CISA)
Apply updates per vendor instructions.
Notes
Reference CISA's ED 21-04 (https://www.cisa.gov/news-events/directives/ed-21-04-mitigate-windows-print-spooler-service-vulnerability) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-04. https://nvd.nist.gov/vuln/detail/CVE-2021-34527
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34527
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog