CVE-2021-43240 NTFS Set Short Name Elevation of Privilege Vulnerability
An attacker can exploit an NTFS short name handling flaw to elevate privileges on affected Windows systems.
- 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-2021-43240?
CVE-2021-43240 is a high-severity vulnerability in Microsoft Windows 10, published on 15 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NTFS Set Short Name Elevation of Privilege Vulnerability
Which versions are affected by CVE-2021-43240?
It affects 4 products.
Products include Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows Server, Microsoft Windows Server 2016.
How do I fix CVE-2021-43240?
No fix has been published for CVE-2021-43240 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-43240 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-43240 exists.
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-gqqh-5jqj-j85x.