CVE-2026-20816

High

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

secure@microsoft.com·CWE-367·Published 2026-01-13

CVSS

7.0

EPSS

0.02

KEV

Exploits

cve.orgen

131 chars

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

NVDen

131 chars

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

NVDes

143 chars

La condición de carrera Time-of-check time-of-use (toctou) en Windows Installer permite a un atacante autorizado elevar privilegios localmente.

Version	Type	Source	Base	Exp	Impact	Vector
3.1	Primary	cve.org	7.8	—	—	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
3.1	Primary	NVD	7.0	1.0	5.9