Local code execution via heap buffer overflow
Published Sep 8, 2026 · Updated Sep 9, 2026
Heap-based buffer overflow in Microsoft Windows Graphics Kernel allows local users with high privileges to execute arbitrary code. Microsoft has disclosed only that the fault is a heap-based buffer overflow and has not named the affected routine or triggering input. Exploitation requires local access and high privileges, needs no interaction from another user, and can execute code across a security boundary.
Summary
What happened
Heap-based buffer overflow in Microsoft Windows Graphics Kernel allows local users with high privileges to execute arbitrary code. Microsoft has disclosed only that the fault is a heap-based buffer overflow and has not named the affected routine or triggering input. Exploitation requires local access and high privileges, needs no interaction from another user, and can execute code across a security boundary.
The record
- CVE
- CVE-2026-73017
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122
- Attack vector
- local
- Privileges
- admin
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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