CVE-2023-48387: Twca Jcicsecuritytool

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

TAIWAN-CA(TWCA) JCICSecurityTool fails to check the source website and access locations when executing multiple Registry-related functions. In the scenario where a user is using the JCICSecurityTool and has completed identity verification, if the user browses a malicious webpage created by an attacker, the attacker can exploit this vulnerability to read or modify any registry file under HKEY_CURRENT_USER, thereby achieving remote code execution.

Affected products

• Twca Jcicsecuritytool: version 4.2.3.32 only

Published 2023-12-15. Last modified 2026-06-17.