Authenticated remote code execution
Published Jan 10, 2023 · Updated Apr 12, 2025
Remote code execution in Windows LDAP allows remote authenticated users to execute code on a domain controller over the network. Microsoft has not published the vulnerable LDAP routine or the incorrect operation it performs on attacker-controlled protocol data. Exploitation requires valid credentials and a server configured as a domain controller, and successful exploitation compromises confidentiality, integrity, and availability.
Summary
What happened
Remote code execution in Windows LDAP allows remote authenticated users to execute code on a domain controller over the network. Microsoft has not published the vulnerable LDAP routine or the incorrect operation it performs on attacker-controlled protocol data. Exploitation requires valid credentials and a server configured as a domain controller, and successful exploitation compromises confidentiality, integrity, and availability.
The record
- CVE
- CVE-2023-21676
- Published
- Jan 10, 2023
- Updated
- Apr 12, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 10, 2023CVE publishedPublication date reported by the CVE source.
- Apr 12, 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.
- Affected versionversion=10.0.17763.0 <10.0.17763.3887
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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