Local privilege escalation via use-after-free
Published Sep 8, 2026 · Updated Sep 10, 2026
Use-after-free in Windows Message Queuing on affected Windows releases allows local users to elevate privileges locally. Microsoft identifies reuse of freed memory in Windows Message Queuing but has not disclosed the affected object, code path, or trigger. A low-privileged local user must satisfy a high-complexity condition; successful exploitation compromises confidentiality, integrity, and availability at elevated privilege.
Summary
What happened
Use-after-free in Windows Message Queuing on affected Windows releases allows local users to elevate privileges locally. Microsoft identifies reuse of freed memory in Windows Message Queuing but has not disclosed the affected object, code path, or trigger. A low-privileged local user must satisfy a high-complexity condition; successful exploitation compromises confidentiality, integrity, and availability at elevated privilege.
The record
- CVE
- CVE-2026-69645
- 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?
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.
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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