Junglewise Threat Intelligence

CVE-2020-0683: Microsoft Windows Installer Privilege Escalation Vulnerability

CVE-2020-0683 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

Technologies: Microsoft Windows Server 2016, Microsoft Windows Server 2008, Microsoft Windows, Microsoft Windows 8.1, Microsoft Windows 10, Microsoft Windows Server 2019, Microsoft Windows 7, Microsoft Windows Server 2012, Microsoft Windows Rt 8.1. Vendors: Microsoft.

Executive brief

Microsoft Windows Installer contains an elevation of privilege vulnerability when MSI packages improperly process symbolic links. An attacker who successfully exploits this vulnerability can bypass access restrictions to add or remove files with elevated permissions.

Affected products

  • Microsoft Windows 10 1507, 1607, 1709, 1803, 1809, 1903, 1909
  • Microsoft Windows 7 SP1
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016 1803, 1903, 1909
  • Microsoft Windows Server 2019

Timeline

  • 2020-02-11: disclosed: MSRC advisory published date (implied by CVE year and patch cycle)
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: disclosed: NVD publication date
  • 2021-11-03: exploited: Confirmed as exploited in the wild by CISA

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