Vulnerability identifier: #VU49401
Vulnerability risk: Critical
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Microsoft Security Essentials
Client/Desktop applications /
Antivirus software/Personal firewalls
Windows Defender
Client/Desktop applications /
Antivirus software/Personal firewalls
Microsoft System Center Endpoint Protection
Server applications /
DLP, anti-spam, sniffers
Vendor: Microsoft
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Microsoft Security Essentials: All versions
Windows Defender: for Windows 8.1 - on Windows Server 2012
Microsoft System Center Endpoint Protection: 2012 - 2012 R2
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.