CVE-2025-6621: Totolink CA300-Poe Firmware

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in TOTOLINK CA300-PoE 6.2c.884. This affects the function QuickSetting of the file ap.so. The manipulation of the argument hour/minute leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Totolink CA300-Poe Firmware: version 6.2c.884 only

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