CVE-2017-15043: Sierra Wireless ES440 Firmware

High severity, CVSS 8.8. EPSS: 4.4% chance of exploitation in the next 30 days.

A vulnerability in Sierra Wireless AirLink GX400, GX440, ES440, and LS300 routers with firmware before 4.4.5 and GX450, ES450, RV50, RV50X, MP70, and MP70E routers with firmware before 4.9 could allow an authenticated remote attacker to execute arbitrary code and gain full control of an affected system, including issuing commands with root privileges. This vulnerability is due to insufficient input validation on user-controlled input in an HTTP request to the targeted device. An attacker in possession of router login credentials could exploit this vulnerability by sending a crafted HTTP request to an affected system.

Affected products

• Sierra Wireless ES440 Firmware: before 4.4.5 (fixed in 4.4.5)
• Sierra Wireless ES450 Firmware: before 4.9 (fixed in 4.9)
• Sierra Wireless GX400 Firmware: before 4.4.5 (fixed in 4.4.5)
• Sierra Wireless GX440 Firmware: before 4.4.5 (fixed in 4.4.5)
• Sierra Wireless GX450 Firmware: before 4.9 (fixed in 4.9)
• Sierra Wireless LS300 Firmware: before 4.4.5 (fixed in 4.4.5)
• Sierra Wireless MP70 Firmware: before 4.9 (fixed in 4.9)
• Sierra Wireless MP70E Firmware: before 4.9 (fixed in 4.9)
• Sierra Wireless RV50 Firmware: before 4.9 (fixed in 4.9)
• Sierra Wireless RV50X Firmware: before 4.9 (fixed in 4.9)

Published 2018-05-04. Last modified 2026-06-17.