CVE-2026-83773

Medium

Description

Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.

SeverityMedium

CVSS5.5

Exploit probability—

Product

Microsoft Windows

PublishedOct 13, 2026

First seenOct 13, 2026

Weakness typeCWE-497CWE-497

How to fix

Update

microsoft windows_11_24h210.0.26100.9711 or later
microsoft windows_11_25h210.0.26200.9711 or later
microsoft windows_11_26h110.0.28000.3231 or later
microsoft windows_11_26h210.0.26300.9711 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83773

Affected products

Product	Affected versions	Fixed in
microsoft windows_11_24h2	v < 10.0.26100.9711	10.0.26100.9711
microsoft windows_11_25h2	v < 10.0.26200.9711	10.0.26200.9711
microsoft windows_11_26h1	v < 10.0.28000.3231	10.0.28000.3231
microsoft windows_11_26h2	v < 10.0.26300.9711	10.0.26300.9711

Check your version

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