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CVE-2020-1472

Netlogon Elevation of Privilege Vulnerability

  • Medium 5.5
  • Exploited: added to CISA KEV 3 Nov 2021
  • Used in ransomware campaigns

Description

An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.

Key facts

Published
17 Aug 2020
Last changed
21 Oct 2025
Assigned by
microsoft
KEV added
3 Nov 2021
KEV fix due
3 May 2022
Used in ransomware
Yes, according to CISA
EPSS
99.389% likely to be exploited in the next 30 days, higher than 99.94% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 5.5CVSS 3.1, Mediumfrom the CNA (microsoft)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
MicrosoftWindows Server version 2004
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2019
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2019 (Server Core installation)
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server, version 1909 (Server Core installation)
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server, version 1903 (Server Core installation)
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2016
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2016 (Server Core installation)
  • 10.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2008 R2 Service Pack 1
  • 6.1.0 up to but excluding publication (affected)
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)
  • 6.0.0 up to but excluding publication (affected)
MicrosoftWindows Server 2012
  • 6.2.0 up to but excluding publication (affected)
MicrosoftWindows Server 2012 (Server Core installation)
  • 6.2.0 up to but excluding publication (affected)
MicrosoftWindows Server 2012 R2
  • 6.3.0 up to but excluding publication (affected)
MicrosoftWindows Server 2012 R2 (Server Core installation)
  • 6.3.0 up to but excluding publication (affected)
MicrosoftWindows Server version 20H2
  • 10.0.0 up to but excluding publication (affected)

Timeline

  1. 17 Aug 2020 Published
  2. 3 Nov 2021 CVE-2020-1472 added to CISA KEV
  3. 3 Nov 2021 Added to the CISA KEV catalogue

References