Local privilege escalation via RRAS double free
Published Sep 8, 2026 · Updated Sep 9, 2026
A double free in Microsoft Windows RRAS allows local users with low privileges to elevate privileges on affected Windows releases. Microsoft has not disclosed the affected RRAS function or the object that is freed twice, so the triggering input and memory-lifetime error remain unspecified. Exploitation requires local low-privilege access, high-complexity conditions, and no user interaction, and successful exploitation compromises confidentiality, integrity, and availability.
Summary
What happened
A double free in Microsoft Windows RRAS allows local users with low privileges to elevate privileges on affected Windows releases. Microsoft has not disclosed the affected RRAS function or the object that is freed twice, so the triggering input and memory-lifetime error remain unspecified. Exploitation requires local low-privilege access, high-complexity conditions, and no user interaction, and successful exploitation compromises confidentiality, integrity, and availability.
The record
- CVE
- CVE-2026-71353
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-415, T1068
- Attack vector
- local
- 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?
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?
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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