All vulnerabilities
CVE-2026-35088

IPx: Inadequate Encryption Strength in Slican telephone exchanges

Slican IPx
Open in ThreatlineRecord JSON
CVSS
8.2High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.62.0100Fixed versionCVE List
Published15 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 4

  • IPxaffected: all versions before 6.62.0100CVE List
  • CCT-1668affected: all versions through 6.56.0430CVE List
  • MAC-6400affected: all versions through 6.56.0430CVE List
  • CXS-0424affected: all versions through 6.30.0510CVE List

References 1