Vulnerability in Csl Mobile Limited 1010 M2m 3g Wifi Module
CVE-2026-67596
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.
EPSS: 0.001 (1.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Csl Mobile Limited 1010 M2m 3g Wifi Module — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67596?
- CVE-2026-67596 is a medium-severity vulnerability in Csl Mobile Limited 1010 M2m 3g Wifi Module, classified under Weak Encoding for Password. CVSS score: 6.2/10. Published 2026-07-30.
- How severe is CVE-2026-67596?
- Medium severity. CVSS v3 base score is 6.2 out of 10.