CVE intelligence

CVE-2026-83773

Vulnerability intelligence

Published Oct 13, 2026Sources checked Oct 21, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-83773 and is rated Medium severity with a CVSS score of 5.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Oct 13, 2026

Vendor remediation details

Install KB5127648. Install KB5127646.

Vendor-listed releases

10.0.26300.9711
10.0.26200.9711
10.0.26100.9711
10.0.28000.3231

CISA KEVNot listedBased on the latest collected catalog

EPSS0.5%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-83773?

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

Source: NVD