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Vulnerability · Published Sep 8, 2026 · Assigned by microsoft

CVE-2026-69682Windows Host Guardian Service Elevation of Privilege Vulnerability

High 7.0

In plain English

A high-severity use-after-free in Windows 10 Version 1809 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 89.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Use after free in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally.

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.9245
Microsoft Windows 10 Version 21H2 10.0.19044.0 – before 10.0.19044.7725
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.7725
Microsoft Windows 11 version 23H2 10.0.22631.0 – before 10.0.22631.7582
Microsoft Windows 11 Version 23H2 10.0.22631.0 – before 10.0.22631.7582
Microsoft Windows 11 Version 24H2 10.0.26100.0 – before 10.0.26100.9445
Microsoft Windows 11 Version 25H2 10.0.26200.0 – before 10.0.26200.9445
Microsoft Windows 11 version 26H1 10.0.28000.0 – before 10.0.28000.2954
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.9245
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.9245
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.5622
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26100.33438
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26100.33438

Weakness: CWE-416, CWE-362 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References