Yokogawa FAST/TOOLS SSL/TLS Vulnerability Allowing Decryption of Web Server Communications

Vulnerability

A vulnerability exists in Yokogawa FAST/TOOLS versions R9.01 to R10.04, specifically within the RVSVRN, UNSVRN, HMIWEB, FTEES, and HMIMOB packages. This vulnerability arises from the product's support for outdated SSL/TLS versions, which could enable an attacker to decrypt communications with the web server.

Impact

Exploitation of this vulnerability could lead to the decryption of communications between the web server and clients, potentially allowing interception of sensitive information.

Added: Feb 9, 2026, 5:21 AM
Updated: Feb 9, 2026, 5:21 AM

Vulnerability Rating

Custom Algorithm
spread
1.4
impact
2.5
exploitability
5.9
remediation
0.0
relevance
2.6
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.