CVE-2025-50402: Fastcom FAC1200R Firmware

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter string fac_password.

Affected products

• Fastcom FAC1200R Firmware: version f400_fac1200r_q only

Published 2025-11-26. Last modified 2026-06-17.