7.8

CVE-2026-20816

Windows Installer Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
MicrosoftWindows 10 1607 HwPlatformx64 Version < 10.0.14393.8783
MicrosoftWindows 10 1607 HwPlatformx86 Version < 10.0.14393.8783
MicrosoftWindows 10 1809 HwPlatformx64 Version < 10.0.17763.8276
MicrosoftWindows 10 1809 HwPlatformx86 Version < 10.0.17763.8276
MicrosoftWindows 10 21h2 Version < 10.0.19044.6809
MicrosoftWindows 10 22h2 Version < 10.0.19045.6809
MicrosoftWindows 11 23h2 Version < 10.0.22631.6491
MicrosoftWindows 11 24h2 Version < 10.0.26100.7623
MicrosoftWindows 11 25h2 Version < 10.0.26200.7623
MicrosoftWindows Server 2008 Version- Updatesp2 HwPlatformx64
MicrosoftWindows Server 2008 Version- Updatesp2 HwPlatformx86
MicrosoftWindows Server 2008 Versionr2 Updatesp1 HwPlatformx64
MicrosoftWindows Server 2016 Version < 10.0.14393.8783
MicrosoftWindows Server 2019 Version < 10.0.17763.8276
MicrosoftWindows Server 2022 Version < 10.0.20348.4648
MicrosoftWindows Server 2022 23h2 Version < 10.0.25398.2092
MicrosoftWindows Server 2025 Version < 10.0.26100.32230
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.106
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
secure@microsoft.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.