Vulnerability in Microsoft Windows 10 Version 1607
CVE-2026-69438
Incorrect conversion between numeric types in Microsoft JScript allows an unauthorized attacker to execute code over a network.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21h2
- Microsoft Windows 10 Version 22h2
- Microsoft Windows 11 Version 23h2
- Microsoft Windows 11 Version 24h2
- Microsoft Windows 11 Version 25h2
- Microsoft Windows 11 Version 26h1
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-69438?
- CVE-2026-69438 is a high-severity vulnerability in Microsoft Windows 10 Version 1607, classified under Incorrect Conversion between Numeric Types. CVSS score: 8.1/10. Published 2026-09-08.
- How severe is CVE-2026-69438?
- High severity. CVSS v3 base score is 8.1 out of 10.