CVE-2026-24285 Win32k Elevation of Privilege Vulnerability
An authorized local attacker can exploit a use-after-free flaw in Windows Win32K to elevate privileges.
- 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-2026-24285?
CVE-2026-24285 is a high-severity use after free vulnerability in Microsoft 365 Copilot, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Weakness: CWE-416
Which versions are affected by CVE-2026-24285?
It affects 14 products.
Products include Microsoft 365 Copilot, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2 and 8 more.
How do I fix CVE-2026-24285?
No fix has been published for CVE-2026-24285 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-24285 being exploited?
There is no known exploitation of CVE-2026-24285 in the wild and no public exploit code.
Other vulnerabilities in Microsoft 365 Copilot
- CVE-2026-85885 Microsoft 365 Copilot Elevation of Privilege Vulnerability
- CVE-2026-50517 Microsoft M365 Copilot Remote Code Execution Vulnerability
- CVE-2026-54130 M365 Copilot Information Disclosure Vulnerability
- CVE-2025-60724 GDI+ Remote Code Execution Vulnerability
- CVE-2025-53766 GDI+ Remote Code Execution Vulnerability
Sources
Also known as GHSA-qchc-wx5p-p7pg.