CVE-2021-40476 Windows AppContainer Elevation Of Privilege Vulnerability
An attacker can exploit a flaw in Windows AppContainer to elevate privileges on affected Windows operating systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-40476?
CVE-2021-40476 is a high-severity vulnerability in Microsoft Windows 10, published on 13 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Windows AppContainer Elevation Of Privilege Vulnerability
Weakness: CWE-522
Which versions are affected by CVE-2021-40476?
It affects 8 products.
Products include Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2012, Microsoft Windows Server 2016 and 2 more.
How do I fix CVE-2021-40476?
No fix has been published for CVE-2021-40476 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40476 being exploited?
There is no known exploitation of CVE-2021-40476 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2015-2426 Microsoft Windows Adobe Type Manager Library Remote Code Execution
- CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation
- CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability
- CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability
- CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-9rq6-7rj6-crx7.