Local privilege escalation via heap buffer overflow
Published Sep 8, 2026 · Updated Sep 9, 2026
A heap-based buffer overflow in Microsoft Windows Error Reporting allows local users with low privileges to elevate privileges. Microsoft identifies Windows Error Reporting as the affected component but has not disclosed the routine, input field, or incorrect memory operation that causes the heap overwrite. Exploitation requires local low-privilege access and no user interaction, and successful exploitation grants higher privileges on the affected Windows host.
Summary
What happened
A heap-based buffer overflow in Microsoft Windows Error Reporting allows local users with low privileges to elevate privileges. Microsoft identifies Windows Error Reporting as the affected component but has not disclosed the routine, input field, or incorrect memory operation that causes the heap overwrite. Exploitation requires local low-privilege access and no user interaction, and successful exploitation grants higher privileges on the affected Windows host.
The record
- CVE
- CVE-2026-69433
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, 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
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
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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