CVE-2023-38321: Sierra Wireless ALEOS

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

OpenNDS, as used in Sierra Wireless ALEOS before 4.17.0.12 and other products, allows remote attackers to cause a denial of service (NULL pointer dereference, daemon crash, and Captive Portal outage) via a GET request to /opennds_auth/ that lacks a custom query string parameter and client-token.

Affected products

• Sierra Wireless ALEOS: before 4.17.0.12 (fixed in 4.17.0.12)

Published 2023-12-25. Last modified 2026-06-17.