CVE-2021-1638 Windows Bluetooth Security Feature Bypass Vulnerability
Attackers can bypass Bluetooth pairing security by exploiting an impersonation flaw in the Passkey Entry Protocol, requiring a Microsoft security update.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1638?
CVE-2021-1638 is a high-severity vulnerability in Microsoft Windows 10, published on 12 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Microsoft is aware of the "Impersonation in the Passkey Entry Protocol" vulnerability. For more information regarding the vulnerability, please see this statement from the Bluetooth SIG. To address the vulnerability, Microsoft has released a software update that will fail attempts to pair if the remote device exchanges a public key with the same X coordinate as the locally exchanged public key
Which versions are affected by CVE-2021-1638?
It affects 3 products.
Products include Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2021-1638?
No fix has been published for CVE-2021-1638 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-1638 being exploited?
There is no known exploitation of CVE-2021-1638 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-j3p8-mm22-v647.