CVE-2026-35087: fallo crítico en Slican NCP
Authentication Bypass in Slican telephone exchanges
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.3epss 0.7%
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.
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
CVEs relacionadas — Slican NCP
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-35090CRITICALAuthentication Bypass in Slican telephone exchangesEPSS 0.6%CVE-2026-35089HIGHUse of Weak Credentials in Slican telephone exchangesEPSS 0.6%CVE-2026-63315HIGHPlaintext storage of a password in WebCTIEPSS 0.3%CVE-2026-63314HIGHSQL Injection in WebCTIEPSS 0.2%CVE-2026-35088HIGHInadequate Encryption Strength in Slican telephone exchangesEPSS 0.1%
Referencias
https://cert.pl/posts/2026/05/CVE-2026-35087