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Vulnerabilities

Vulnerability · CVE-2020-1472

Microsoft Netlogon Privilege Escalation Vulnerability

Published Aug 17, 2020 · catalog updated Jun 16, 2026 · Microsoft Netlogon

Patch now

CVE-2020-1472 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Microsoft Netlogon against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Medium5.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.39%
Remediation
Remediation guidance
Affected products
cpe canonical/ubuntu linux · cpe fedoraproject/fedora · cpe microsoft/windows server 1903 · cpe microsoft/windows server 1909 · cpe microsoft/windows server 2004 · cpe microsoft/windows server 2008

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe canonical/ubuntu linux14.04
  • cpe fedoraproject/fedora31
  • cpe microsoft/windows server 1903version unspecified
  • cpe microsoft/windows server 1909version unspecified
  • cpe microsoft/windows server 2004version unspecified
  • cpe microsoft/windows server 2008r2
  • cpe microsoft/windows server 2012r2
  • cpe microsoft/windows server 2016version unspecified
  • cpe microsoft/windows server 2019version unspecified
  • cpe opensuse/leap15.1
  • cpe synology/directory serverversion unspecified
  • vendor Microsoft Netlogonversion unspecified

How to fix CVE-2020-1472

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-1472 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Microsoft Netlogon against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 14.04; microsoft/windows server 2008 r2; microsoft/windows server 2012 r2. Apply updates per vendor instructions.

What should an analyst verify?

CWE-330: Insufficiently Random Values. EPSS 99.39%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 17, 2020 · Catalog

    Detected

    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

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-2020-1472

    Microsoft's Netlogon Remote Protocol (MS-NRPC) contains a privilege escalation vulnerability when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller. An attacker who successfully exploits the vulnerability could run a specially crafted application on a device on the network. The vulnerability is also known under the moniker of Zerologon.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-1472

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-1472

    30-day exploitation probability 99.4%

    first.org
  • Exploit DatabasePublic exploit reference49071

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleauxiliary_admin/dcerpc/cve_2020_1472_zerologon

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2020-1472

    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

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2020-1472

    Microsoft's Netlogon Remote Protocol (MS-NRPC) contains a privilege escalation vulnerability when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller. An attacker who successfully exploits the vulnerability could run a specially crafted

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.