CVE-2025-45790: Totolink a3100r Firmware

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the priority parameter in the setMacQos interface of /lib/cste_modules/firewall.so.

Affected products

• Totolink a3100r Firmware: version 5.9c.1527 only

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