Local code execution via GRFX integer overflow
Published Jun 9, 2026 · Updated Jun 9, 2026
Integer overflow in Win32K GRFX and Microsoft Android Office apps allows local users to execute code through crafted input. Microsoft identifies the graphics component but has not disclosed the vulnerable function, overflowing calculation, or input-processing path. Exploitation requires user interaction and a local execution context; successful exploitation runs attacker-controlled code.
Summary
What happened
Integer overflow in Win32K GRFX and Microsoft Android Office apps allows local users to execute code through crafted input. Microsoft identifies the graphics component but has not disclosed the vulnerable function, overflowing calculation, or input-processing path. Exploitation requires user interaction and a local execution context; successful exploitation runs attacker-controlled code.
The record
- CVE
- CVE-2026-44812
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-190, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.8880
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo