The vulnerability exploitation was detected in the wild by Symantec team via Honeypot Analysis.
Vulnerable component: UUSee UUUpgrade ActiveX control
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-618 - Exposed Unsafe ActiveX Method
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of arguments passed to the "Update()" method in UUUpgrade.ocx ActiveX control. A remote attacker can trick the victim to visit a specially crafted website and upload malicious file into arbitrary location on victim's computer.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Note: this vulnerability was being actively exploited in the wild.