CVE-2026-45604 Windows Managed Installer Information Disclosure Vulnerability
An authorized local attacker can exploit an out-of-bounds read in the Windows AppID subsystem to disclose sensitive 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-2026-45604?
CVE-2026-45604 is a medium-severity vulnerability in Microsoft Windows 11 23h2, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Out-of-bounds read in Windows Application Identity (AppID) Subsystem allows an authorized attacker to disclose information locally.
Weakness: CWE-125
Which versions are affected by CVE-2026-45604?
It affects 5 products.
Products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2025.
How do I fix CVE-2026-45604?
No fix has been published for CVE-2026-45604 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45604 being exploited?
There is no known exploitation of CVE-2026-45604 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 23h2
- CVE-2026-81963 Microsoft Windows Link Following
- CVE-2026-100219 Microsoft QUIC Remote Code Execution Vulnerability
- CVE-2026-96909 Windows BitLocker Remote Code Execution Vulnerability
- CVE-2026-62815 Microsoft QUIC Remote Code Execution Vulnerability
- CVE-2026-45657 Windows Kernel Remote Code Execution Vulnerability
Sources
Also known as GHSA-95c9-4wfm-w24v.