CVE-2026-26792: Gl-Inet AR300M16 Firmware

Critical severity, CVSS 9.8. EPSS: 4.1% chance of exploitation in the next 30 days.

GL-iNet GL-AR300M16 v4.3.11 was discovered to contain multiple command injection vulnerabilities in the set_upgrade function via the modem_url, target_version, current_version, firmware_upload, hash_type, hash_value, and upgrade_type parameters. These vulnerabilities allow attackers to execute arbitrary commands via a crafted input.

Affected products

• Gl-Inet AR300M16 Firmware: version 4.3.11 only

Published 2026-03-12. Last modified 2026-06-17.