CVE-2026-35089: Use of Weak Credentials in Slican telephone exchanges
In Slican telephone exchanges secure key is generated in a predictable manner using properties of the telephone exchange which can be obtained without authentication. An unauthenticated attacker can deduce the secure key and obtain admin credentials.
This issue was fixed in versions below: - IPx series: version 6.61.0040 - CCT-1668: version 6.56.0430 - MAC-6400: version 6.56.0430 - CXS-0424: version 6.30.0510
The issue STILL EXISTS in End-Of-Life telephone exchanges in versions 4.xx and below: - CCT-1668 (CCT1CPU) - MAC-6400 - CXS-0424 These products were discontinued in 2011 and 2012 and and will not receive updates. These products require a hardware update in order to receive a software update. The vendor recommends that users of these devices contact the their service department directly to determine the options for upgrading.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-35089?
CVE-2026-35089 has a high severity rating of 8.7.
How do I fix CVE-2026-35089?
To mitigate CVE-2026-35089, update your Slican telephone exchange to the latest version as specified in the vendor's advisory.
What vulnerabilities does CVE-2026-35089 exploit?
CVE-2026-35089 exploits weak credential generation in Slican telephone exchanges, allowing unauthorized access.
What software is affected by CVE-2026-35089?
CVE-2026-35089 affects various SLICAN IPx series models and related Slican products.
Who is affected by CVE-2026-35089?
Organizations using vulnerable Slican telephone exchanges are at risk due to CVE-2026-35089.