CVE-2025-58801: Kcs Responder

Medium severity, CVSS 5.4. EPSS: 0.1% chance of exploitation in the next 30 days.

Cross-Site Request Forgery (CSRF) vulnerability in KCS Responder responder allows Cross Site Request Forgery.This issue affects Responder: from n/a through <= 4.3.8.

Affected products

• Kcs Responder: up to and including 4.3.8

Published 2025-09-05. Last modified 2026-06-17.