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8 vulnerabilities found for CCT-1668 by Slican
CVE-2026-35088 (GCVE-0-2026-35088)
Vulnerability from nvd – Published: 2026-10-15 09:00 – Updated: 2026-10-15 13:48
VLAI
EPSS
VEX
Title
Inadequate Encryption Strength in Slican telephone exchanges
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 13:47 UTC
CWE
- CWE-326 - Inadequate Encryption Strength
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/10/CVE-2026-35088 | third-party-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Slican | IPx |
Affected:
0 , < 6.62.0100
(semver)
cpe:2.3:a:slican:ipx:*:*:*:*:*:*:*:* |
|
| Slican | CCT-1668 |
Affected:
0 , ≤ 6.56.0430
(custom)
cpe:2.3:a:slican:cct-1668:*:*:*:*:*:*:*:* |
|
| Slican | MAC-6400 |
Affected:
0 , ≤ 6.56.0430
(custom)
cpe:2.3:a:slican:mac-6400:*:*:*:*:*:*:*:* |
|
| Slican | CXS-0424 |
Affected:
0 , ≤ 6.30.0510
(custom)
cpe:2.3:a:slican:cxs-0424:*:*:*:*:*:*:*:* |
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CVE-2026-35090 (GCVE-0-2026-35090)
Vulnerability from nvd – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:29
VLAI
EPSS
VEX
Title
Authentication Bypass in Slican telephone exchanges
Summary
In Slican telephone exchanges it is possible to manage the control panel remotely. An unauthenticated attacker can connect to the modem via a telephone with a specific caller ID. This allows them to bypass admin authentication and gain full access to the service protocol and configuration panel. This vulnerability is independent of the telephone exchanges configuration. If remote access is disabled, calling with this caller ID will temporarily enable it.
This issue was fixed in versions below:
- IPL-256: version 6.61.0040
- IPM-032: 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:28 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:42
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CVE-2026-35089 (GCVE-0-2026-35089)
Vulnerability from nvd – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:31
VLAI
EPSS
VEX
Title
Use of Weak Credentials in Slican telephone exchanges
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:30 UTC
CWE
- CWE-1391 - Use of Weak Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:42
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CVE-2026-35087 (GCVE-0-2026-35087)
Vulnerability from nvd – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:39
VLAI
EPSS
VEX
Title
Authentication Bypass in Slican telephone exchanges
Summary
Slican telephone exchanges allow administrative protocol authentication bypass. An attacker can bypass the need to enter login credentials by executing the appropriate command.
This issue was fixed in versions below:
- NCP: version 1.24.0250
- 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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:39 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:41
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CVE-2026-35088 (GCVE-0-2026-35088)
Vulnerability from cvelistv5 – Published: 2026-10-15 09:00 – Updated: 2026-10-15 13:48
VLAI
EPSS
VEX
Title
Inadequate Encryption Strength in Slican telephone exchanges
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 13:47 UTC
CWE
- CWE-326 - Inadequate Encryption Strength
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/10/CVE-2026-35088 | third-party-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Slican | IPx |
Affected:
0 , < 6.62.0100
(semver)
cpe:2.3:a:slican:ipx:*:*:*:*:*:*:*:* |
|
| Slican | CCT-1668 |
Affected:
0 , ≤ 6.56.0430
(custom)
cpe:2.3:a:slican:cct-1668:*:*:*:*:*:*:*:* |
|
| Slican | MAC-6400 |
Affected:
0 , ≤ 6.56.0430
(custom)
cpe:2.3:a:slican:mac-6400:*:*:*:*:*:*:*:* |
|
| Slican | CXS-0424 |
Affected:
0 , ≤ 6.30.0510
(custom)
cpe:2.3:a:slican:cxs-0424:*:*:*:*:*:*:*:* |
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CVE-2026-35090 (GCVE-0-2026-35090)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:29
VLAI
EPSS
VEX
Title
Authentication Bypass in Slican telephone exchanges
Summary
In Slican telephone exchanges it is possible to manage the control panel remotely. An unauthenticated attacker can connect to the modem via a telephone with a specific caller ID. This allows them to bypass admin authentication and gain full access to the service protocol and configuration panel. This vulnerability is independent of the telephone exchanges configuration. If remote access is disabled, calling with this caller ID will temporarily enable it.
This issue was fixed in versions below:
- IPL-256: version 6.61.0040
- IPM-032: 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:28 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:42
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CVE-2026-35089 (GCVE-0-2026-35089)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:31
VLAI
EPSS
VEX
Title
Use of Weak Credentials in Slican telephone exchanges
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:30 UTC
CWE
- CWE-1391 - Use of Weak Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:42
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CVE-2026-35087 (GCVE-0-2026-35087)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:39
VLAI
EPSS
VEX
Title
Authentication Bypass in Slican telephone exchanges
Summary
Slican telephone exchanges allow administrative protocol authentication bypass. An attacker can bypass the need to enter login credentials by executing the appropriate command.
This issue was fixed in versions below:
- NCP: version 1.24.0250
- 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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:39 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/05/CVE-2026-35087 | third-party-advisory |
Impacted products
Date Public
2026-05-27 12:41
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"value": "Slican telephone exchanges allow administrative protocol authentication bypass. An attacker can bypass the need to enter login credentials by executing the appropriate command.\n\n\nThis issue was fixed in versions below:\n- NCP: version 1.24.0250\n- IPx series: version 6.61.0040\n- CCT-1668: version 6.56.0430\n- MAC-6400: version 6.56.0430\n- CXS-0424: version 6.30.0510\n\nThe issue STILL EXISTS in End-Of-Life telephone exchanges in versions 4.xx and below:\n- CCT-1668 (CCT1CPU)\n- MAC-6400\n-\u00a0CXS-0424\nThese 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": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-288",
"description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T12:51:19.907Z",
"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"shortName": "CERT-PL"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://cert.pl/posts/2026/05/CVE-2026-35087"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Authentication Bypass in Slican telephone exchanges",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"assignerShortName": "CERT-PL",
"cveId": "CVE-2026-35087",
"datePublished": "2026-05-27T12:42:04.409Z",
"dateReserved": "2026-04-01T11:23:16.117Z",
"dateUpdated": "2026-05-27T15:39:44.033Z",
"state": "PUBLISHED"
},
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}