CVE-2025-45841: Totolink NR1800X Firmware

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the text parameter in the setSmsCfg function.

Affected products

• Totolink NR1800X Firmware: version 9.1.0u.6681_b20230703 only

Published 2025-05-08. Last modified 2026-06-17.