CVE-2025-22900: Totolink n600r Firmware

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

Totolink N600R v4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macCloneMac parameter in the setWanConfig function.

Affected products

• Totolink n600r Firmware: version 4.3.0cu.7647_b20210106 only

Published 2025-04-15. Last modified 2026-06-17.