CVE-2025-50399: Buffer Overflow
Published Nov 26, 2025
·Updated
FAST FAC1200R F400FAC1200RQ is vulnerable to Buffer Overflow in the function sub80435780 via the parameter password.
Affected Software
2 affected components
All of the following
Fastcom Fac1200r Firmware=f400_fac1200r_q
Fastcom Fac1200r
Event History
Nov 26, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-50399?
The severity of CVE-2025-50399 is rated as high due to the potential for remote code execution via buffer overflow.
2
How do I fix CVE-2025-50399?
To fix CVE-2025-50399, update the FAST FAC1200R firmware to the latest version that addresses this buffer overflow vulnerability.
3
What systems are affected by CVE-2025-50399?
CVE-2025-50399 affects the FAST FAC1200R firmware version F400_FAC1200R_Q.
4
What is a buffer overflow as it relates to CVE-2025-50399?
A buffer overflow in CVE-2025-50399 occurs when the parameter password exceeds the allocated memory space, potentially allowing an attacker to execute arbitrary code.
5
Is the FASTCOM FAC1200R hardware itself vulnerable in CVE-2025-50399?
No, the hardware FASTCOM FAC1200R is not vulnerable; only the specific firmware version F400_FAC1200R_Q contains the vulnerability.