CVE-2026-35088 PUBLISHED

Inadequate Encryption Strength in Slican telephone exchanges

Assigner: CERT-PL
Reserved: 01.04.2026 Published: 15.10.2026 Updated: 15.10.2026

Slican telephone exchanges use symmetric encryption for TCP/IP communication. Secret key is hardcoded in multiple binary files. An attacker who has access to these files can decrypt the communication.

This issue was fixed in IPx series version 6.62.0100.

The issue STILL EXISTS in End-Of-Life telephone exchanges: - 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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
CVSS Score: 8.2

Product Status

Vendor Slican
Product IPx
Versions Default: unaffected
  • affected from 0 to 6.62.0100 (excl.)
Vendor Slican
Product CCT-1668
Versions Default: affected
  • affected from 0 to 6.56.0430 (incl.)
Vendor Slican
Product MAC-6400
Versions Default: affected
  • affected from 0 to 6.56.0430 (incl.)
Vendor Slican
Product CXS-0424
Versions Default: affected
  • affected from 0 to 6.30.0510 (incl.)

Credits

  • Grupa ŻN finder

References

Problem Types

  • CWE-326 Inadequate Encryption Strength CWE

Impacts

  • CAPEC-112 Brute Force