NULL pointer dereference in Microsoft Windows 10 Version 1809
CVE-2026-69978
Null pointer dereference in Windows VMSwitch allows an authorized attacker to deny service locally.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/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 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 11 Version 26h2
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core Installation)
Weakness classification (CWE)
References
- Microsoft Windows VMSwitch Denial of Service Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-69978?
- CVE-2026-69978 is a medium-severity vulnerability in Microsoft Windows 10 Version 1809, classified under NULL Pointer Dereference. CVSS score: 5.6/10. Published 2026-10-13.
- How severe is CVE-2026-69978?
- Medium severity. CVSS v3 base score is 5.6 out of 10.