CVE-2021-1675: Microsoft Windows Print Spooler Remote Code Execution Vulnerability

CVE-2021-1675 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

The Microsoft Windows Print Spooler service contains a vulnerability that allows for remote code execution. This flaw, often associated with the 'PrintNightmare' vulnerability class, enables an attacker to execute arbitrary code with system privileges.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2021-1675 exploited in the wild?
Yes. CVE-2021-1675 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-1675?
Critical severity, with a CVSS score of 7.8, published 3 November 2021.
Which products and versions are affected?
Microsoft Windows 10 up to (excluding) 10.0.10240.18967; Microsoft Windows 10 1607 up to (excluding) 10.0.14393.4467; Microsoft Windows 10 1809 up to (excluding) 10.0.17763.1999; Microsoft Windows 10 1909 up to (excluding) 10.0.18363.1621; and 13 more.
Is there a fix for CVE-2021-1675?
A patch was published on 2021-06-08: Initial patch released by Microsoft (later updated) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-1675 attacked?
It is attacked over the network or with local access, in an operating system.
Am I affected by CVE-2021-1675?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 up to (excluding) 10.0.10240.18967
  • Microsoft Windows 10 1607 up to (excluding) 10.0.14393.4467
  • Microsoft Windows 10 1809 up to (excluding) 10.0.17763.1999
  • Microsoft Windows 10 1909 up to (excluding) 10.0.18363.1621
  • Microsoft Windows 10 2004 up to (excluding) 10.0.19041.1052
  • Microsoft Windows 10 20H2 up to (excluding) 10.0.19042.1052
  • Microsoft Windows 10 21H1 up to (excluding) 10.0.19043.1052
  • Microsoft Windows 7 SP1
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows Server 2004 up to (excluding) 10.0.19041.1052
  • Microsoft Windows Server 2008 SP2
  • Microsoft Windows Server 2008 R2 SP1
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016 up to (excluding) 10.0.14393.4467
  • Microsoft Windows Server 2019 up to (excluding) 10.0.17763.1999

Timeline

  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: disclosed
  • 2021-06-08: patched: Initial patch released by Microsoft (later updated)

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