CVE-2025-57623: Totolink n600r Firmware

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.

Affected products

• Totolink n600r Firmware: version 4.3.0cu.7866_b2022506 only

Published 2025-09-25. Last modified 2026-06-17.