CVE-2026-69830

HighCVSS 8.1/10Last modified Oct 26, 2026

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DHCP Server allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-362CWE-416

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.26434
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.26434
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.23470
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.23470
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.5761
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.33650
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33650

References

Timeline

Published
Oct 13, 2026
Last modified
Oct 26, 2026
NVD status
Analyzed

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CVE-2026-69830: High severity, CVSS 8.1 | Vulnix