CVE-2026-83773 Windows MIDI Service Module Information Disclosure Vulnerability
An authorized local attacker can exploit the Windows MIDI Service to disclose sensitive system information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83773?
CVE-2026-83773 is a medium-severity vulnerability in Microsoft Windows 11 Version 24H2, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.
Weakness: CWE-497
Which versions are affected by CVE-2026-83773?
How do I fix CVE-2026-83773?
No fix has been published for CVE-2026-83773 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-83773 being exploited?
There is no known exploitation of CVE-2026-83773 in the wild and no public exploit code.
Sources
Also known as GHSA-r3xr-rr8m-7f2x.