CVE-2022-34691Network attack vector

SYSTEM elevation via weak machine-certificate mapping

Published Aug 9, 2022 · Updated Jun 5, 2025

Privilege escalation in Microsoft Active Directory Domain Services allows remote authenticated users to obtain SYSTEM privileges. During certificate-based authentication, the KDC fails to account for a trailing dollar sign in machine names and permits certificates to spoof related accounts. Exploitation requires control of a computer account and access to Active Directory Certificate Services; a successful certificate authenticates with SYSTEM privileges.

CVSS severityUnavailable
Unscored
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Microsoft Active Directory Domain Services allows remote authenticated users to obtain SYSTEM privileges. During certificate-based authentication, the KDC fails to account for a trailing dollar sign in machine names and permits certificates to spoof related accounts. Exploitation requires control of a computer account and access to Active Directory Certificate Services; a successful certificate authenticates with SYSTEM privileges.

The record

CVE
CVE-2022-34691
Published
Aug 9, 2022
Updated
Jun 5, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-269, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2025Record 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=10.0.10240.0 <10.0.10240.19387

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.19387
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.3287
Microsoft · Windows 7version=6.1.0 <6.1.7601.26065
Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.1889
Microsoft · Windows 8.1version=6.3.0 <6.3.9600.20520
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.5291
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.856
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.23817
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.23817
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.1889
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.5291
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.26065
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.1889
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.26065
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.20520
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.3287
Microsoft · Windows 7 Service Pack 1version=6.1.0 <6.1.7601.26065
Microsoft · Windows Server version 20H2version=10.0.0 <10.0.19042.1889
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.5291
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.21616
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.887
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.3287; version=10.0.17763.0 <10.0.17763.3287
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.20520
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.21616

Published CVSS scores

8.8MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1098Account Manipulation

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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