Local privilege escalation via use-after-free
Published Sep 8, 2026 · Updated Sep 10, 2026
Use-after-free in Microsoft Windows Remote Access Connection Manager allows local users to elevate privileges on affected systems. Microsoft has not disclosed the freed object's identity, the lifetime error that leaves it reachable, or the operation that reuses it. Exploitation requires low-privilege local access, high-complexity conditions, and no user interaction, with successful exploitation granting elevated control over the system.
Summary
What happened
Use-after-free in Microsoft Windows Remote Access Connection Manager allows local users to elevate privileges on affected systems. Microsoft has not disclosed the freed object's identity, the lifetime error that leaves it reachable, or the operation that reuses it. Exploitation requires low-privilege local access, high-complexity conditions, and no user interaction, with successful exploitation granting elevated control over the system.
The record
- CVE
- CVE-2026-71333
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 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.
- Affected versionversion=10.0.17763.0 <10.0.17763.9245
What conditions does exploitation require?
What is affected?
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.
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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