EUVD-2026-32277
GHSA-pch2-h8hc-84fh
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Predictable secure-key generation in Slican telephone exchanges (IPx, CCT-1668, MAC-6400, and CXS-0424 series) lets a remote unauthenticated attacker reconstruct the device's secure key from exchange properties that are readable without credentials, then derive administrator credentials. The flaw is network-reachable with low attack complexity and no authentication (CVSS 4.0 base 8.7), and while fixed firmware is available for supported lines, discontinued 4.xx and earlier units remain permanently exposed. …
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RemediationAI
Within 24 hours: Inventory all Slican telephone exchange models in production and identify any discontinued 4.xx units. Within 7 days: Apply vendor-released firmware patches to all supported product lines (IPx series and later). …
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