NULL pointer dereference in Microsoft Windows 10 Version 1607
CVE-2026-83665
Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core Installation)
- Microsoft Windows Server 2012 (Server Core Installation)
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core Installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core Installation)
Weakness classification (CWE)
References
- Windows DHCP Server Denial of Service Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-83665?
- CVE-2026-83665 is a high-severity vulnerability in Microsoft Windows 10 Version 1607, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-10-13.
- How severe is CVE-2026-83665?
- High severity. CVSS v3 base score is 7.5 out of 10.