Authenticated code execution via use-after-free
Published Aug 11, 2026 · Updated Aug 25, 2026
Use-after-free in Active Directory Certificate Services (AD CS) allows remote authenticated users to execute code over a network. Microsoft has not disclosed the affected function or the operation that leaves an AD CS object accessible after its memory is freed. Low-privileged authentication is required, and successful exploitation runs code on the affected Windows host.
Summary
What happened
Use-after-free in Active Directory Certificate Services (AD CS) allows remote authenticated users to execute code over a network. Microsoft has not disclosed the affected function or the operation that leaves an AD CS object accessible after its memory is freed. Low-privileged authentication is required, and successful exploitation runs code on the affected Windows host.
The record
- CVE
- CVE-2026-62818
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 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.
- Affected versionversion=10.0.17763.0 <10.0.17763.9121
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
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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