CVE-2025-63218: Axeltechnology WOLF1MS Firmware

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The Axel Technology WOLF1MS and WOLF2MS devices (firmware versions 0.8.5 to 1.0.3) are vulnerable to Broken Access Control due to missing authentication on the /cgi-bin/gstFcgi.fcgi endpoint. Unauthenticated remote attackers can list user accounts, create new administrative users, delete users, and modify system settings, leading to full compromise of the device.

Affected products

• Axeltechnology WOLF1MS Firmware: from 0.8.5, up to and including 1.0.3
• Axeltechnology WOLF2MS Firmware: from 0.8.5, up to and including 1.0.3

Published 2025-11-19. Last modified 2026-06-17.