Directory-service interruption via NULL pointer dereference
Published Sep 8, 2026 · Updated Sep 9, 2026
Denial of service in Microsoft Active Directory Domain Services allows remote authenticated users to interrupt directory service over a network. Microsoft identifies a NULL pointer dereference in Active Directory Domain Services but does not disclose the affected routine or malformed input that reaches it. A low-privileged authenticated network position is required; exploitation stops directory-service availability without reported data disclosure or modification.
Summary
What happened
Denial of service in Microsoft Active Directory Domain Services allows remote authenticated users to interrupt directory service over a network. Microsoft identifies a NULL pointer dereference in Active Directory Domain Services but does not disclose the affected routine or malformed input that reaches it. A low-privileged authenticated network position is required; exploitation stops directory-service availability without reported data disclosure or modification.
The record
- CVE
- CVE-2026-62762
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-476, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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?
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- Affected versionversion=10.0.17763.0 <10.0.17763.9245
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
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Technologies
Your stack
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Your stack
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