CVE-2026-67596: Csl Mobile Limited Csl 1010 m2m 3g Wifi Module

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

CSL 1010 M2M 3G WiFi Module firmware through 2.2.1.4 contains a weak encryption vulnerability that allows unauthenticated attackers to recover all stored secrets in plaintext by reversing a single-byte XOR cipher that uses a static key to obfuscate the configuration backup file. Attackers can trivially decrypt the Router.cfg backup file to expose web administration and telnet passwords, WPA/WPA2 pre-shared keys, PPPoE and 3G/APN credentials, and SIM identifiers including IMSI and IMEI.

Affected products

Published 2026-07-30. Last modified 2026-07-31.