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CVE-2026-35090— Authentication Bypass in Slican telephone exchanges

AI Predicted 9.8 Difficulty: Trivial
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I. Basic Information for CVE-2026-35090

Vulnerability Information
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Vulnerability Title
Authentication Bypass in Slican telephone exchanges
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
SlicanCCT-1668 0 ~ 6.56.0430 -
SlicanMAC-6400 0 ~ 6.56.0430 -
SlicanCXS-0424 0 ~ 6.30.0510 -
SlicanIPL-256 0 ~ 6.61.0040 -
SlicanIPM-032 0 ~ 6.61.0040 -

II. Public POCs for CVE-2026-35090

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III. Intelligence Information for CVE-2026-35090

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Security Blog Posts for CVE-2026-35090 (1)

Same Patch Batch · Slican · 2026-05-27 · 3 CVEs total

CVE-2026-35087Authentication Bypass in Slican telephone exchanges
CVE-2026-35089Use of Weak Credentials in Slican telephone exchanges

IV. Related Vulnerabilities

Same vendor: Slican
Same weakness: CWE-288

V. Comments for CVE-2026-35090

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