CVE-2026-62879: Missing authentication for critical function in Windows SmartScreen allows an authorized attacker to perform tampering locally.

PriorityP431medium5.5CVSS 3.1

AVLACLPRLUINSUCNIHAN

EPSS

0.31%

22.5th percentile

Missing authentication for critical function in Windows SmartScreen allows an authorized attacker to perform tampering locally.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_10_version_1809	>= 10.0.17763.0 < 10.0.17763.9376	10.0.17763.9376
microsoft	windows_10_version_21h2	>= 10.0.19044.0 < 10.0.19044.7807	10.0.19044.7807
microsoft	windows_10_version_22h2	>= 10.0.19045.0 < 10.0.19045.7807	10.0.19045.7807
microsoft	windows_11_version_23h2	>= 10.0.22631.0 < 10.0.22631.7652	10.0.22631.7652
microsoft	windows_11_version_24h2	>= 10.0.26100.0 < 10.0.26100.9711	10.0.26100.9711
microsoft	windows_11_version_25h2	>= 10.0.26200.0 < 10.0.26200.9711	10.0.26200.9711
microsoft	windows_11_version_26h1	>= 10.0.28000.0 < 10.0.28000.3231	10.0.28000.3231
microsoft	windows_11_version_26h2	>= 10.0.26300.0 < 10.0.26300.9711	10.0.26300.9711
microsoft	windows_server_2019	>= 10.0.17763.0 < 10.0.17763.9376	10.0.17763.9376
microsoft	windows_server_2022	>= 10.0.20348.0 < 10.0.20348.5761	10.0.20348.5761
microsoft	windows_server_2025	>= 10.0.26100.0 < 10.0.26100.33650	10.0.26100.33650

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