CVE-2022-38023Network attack vector

Privilege elevation via unsealed Netlogon RPC

Published Nov 9, 2022 · Updated Aug 10, 2026

Security feature bypass in Microsoft Windows Server Netlogon allows remote attackers to gain domain privileges through unsealed RPC traffic. Netlogon accepts RPC signing, which authenticates messages without encrypting them, instead of requiring RPC sealing for confidentiality. Reachability requires a Netlogon secure channel for a domain-joined machine account, after which the weakness enables privilege elevation.

CVSS severity8.1
High
EPSS probability2.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security feature bypass in Microsoft Windows Server Netlogon allows remote attackers to gain domain privileges through unsealed RPC traffic. Netlogon accepts RPC signing, which authenticates messages without encrypting them, instead of requiring RPC sealing for confidentiality. Reachability requires a Netlogon secure channel for a domain-joined machine account, after which the weakness enables privilege elevation.

The record

CVE
CVE-2022-38023
Published
Nov 9, 2022
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Windows Server 2019
Classifications
T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.17763.0 <10.0.17763.4645

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.4645
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.6085
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24374
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24374
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.6085
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.26623
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.26623
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.21063
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.4645
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22175
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1850
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.21063
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22175

Published CVSS scores

8.1MicrosoftCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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