CVE-2021-1675, also known as PrintNightmare, is a high-severity vulnerability affecting the Windows Print Spooler, which can lead to remote code execution or elevation of privilege. This vulnerability impacts various versions of Microsoft Windows, including Windows 10, Windows 7, Windows 8.1, and Windows Server editions. It is crucial for users and administrators to be aware of this vulnerability and take necessary precautions to protect their systems.

How do I know if I'm affected?

To determine if you're affected by this vulnerability, also known as PrintNightmare, you should first check if your system is running any of the affected Windows versions. These include various versions of Windows 10, Windows 7 SP1, Windows 8.1, Windows RT 8.1, and Windows Server (2008, 2008 R2 SP1, 2012, 2012 R2, 2016, and 2019). If your system is running one of these versions, it is potentially vulnerable to this high-severity issue. For users not familiar with technical details, consulting a cybersecurity professional is recommended to assess your system's vulnerability.

What should I do if I'm affected?

If you're affected by the this vulnerability, follow these simple steps: Update your Windows system with the latest security patches from Microsoft. Disable the Print Spooler service if it's not needed. Consult a cybersecurity professional for further guidance. Stay vigilant and keep your software up-to-date to protect your system.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

Yes, CVE-2021-1675, also known as the Microsoft Windows Print Spooler Remote Code Execution Vulnerability, is in CISA's Known Exploited Vulnerabilities Catalog. It was added on November 3, 2021, with a due date of November 17, 2021. The required action is to apply updates according to vendor instructions to protect your system from this vulnerability.

Weakness enumeration

The CVE-2021-1675 vulnerability categorized as NVD-CWE-Other, also known as PrintNightmare, involves a weakness in the Windows Print Spooler that can lead to remote code execution or privilege escalation. Microsoft has released a security update to address this issue.

For more details

For a comprehensive analysis of this vulnerability, including its description, severity, technical details, and known affected software configurations, refer to the NVD page or the resources listed below.

• Microsoft PrintNightmare Proof Of Concept

• PrintNightmare Windows Spooler Service Remote Code Execution

• Print Spooler Remote DLL Injection

• CVE-2021-1675 - Security Update Guide - Microsoft