CVE-2023-36955: Totolink CP300+ Firmware

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

TOTOLINK CP300+ <=V5.2cu.7594_B20200910 was discovered to contain a stack overflow via the File parameter in the function UploadCustomModule.

Affected products

• Totolink CP300+ Firmware: up to and including 5.2cu.7594_b20200910

Published 2023-10-16. Last modified 2026-06-17.