{"id":57409,"date":"2026-05-27T09:35:54","date_gmt":"2026-05-27T09:35:54","guid":{"rendered":"https:\/\/zero.redgem.net\/?p=57409"},"modified":"2026-05-27T09:35:54","modified_gmt":"2026-05-27T09:35:54","slug":"use-of-weak-credentials-in-slican-telephone-exchanges","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=57409","title":{"rendered":"Use of Weak Credentials in Slican telephone exchanges_CVE-2026-35089"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;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.\\n\\nThis issue was fixed in versions below:\\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- CXS-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.&#8221;,&#8221;published&#8221;:&#8221;2026-05-27T12:42:19.741Z&#8221;,&#8221;modified&#8221;:&#8221;2026-05-27T12:42:19.741Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;Use of Weak Credentials in Slican telephone exchanges&#8221;,&#8221;source&#8221;:&#8221;CERT-PL&#8221;,&#8221;references&#8221;:&#8221;https:\/\/cert.pl\/posts\/2026\/05\/CVE-2026-35087&#8243;,&#8221;id&#8221;:&#8221;CVE-2026-35089&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:[&#8220;CWE-1391&#8243;],&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;Slican IPx 0\\nSlican CCT-1668 0\\nSlican MAC-6400 0\\nSlican CXS-0424 0&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:8.7,&#8221;severity&#8221;:&#8221;HIGH&#8221;,&#8221;vector&#8221;:&#8221;CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:H\/VI:N\/VA:N\/SC:N\/SI:N\/SA:N&#8221;,&#8221;version&#8221;:&#8221;4.0&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;IPx&#8221;,&#8221;version&#8221;:&#8221;0&#8243;,&#8221;vendor&#8221;:&#8221;Slican&#8221;,&#8221;ai_description&#8221;:&#8221;Predictable secure key generation in Slican telephone exchanges allows unauthenticated attackers to obtain admin credentials&#8221;,&#8221;ai_severity&#8221;:&#8221;High&#8221;,&#8221;ai_vendor&#8221;:&#8221;Slican&#8221;,&#8221;ai_product&#8221;:&#8221;Slican telephone exchanges (IPx, CCT-1668, MAC-6400, CXS-0424)&#8221;,&#8221;ai_version&#8221;:&#8221;4.xx and below, 6.61.0040 and below for IPx, 6.56.0430 and below for CCT-1668 and MAC-6400, 6.30.0510 and below for CXS-0424&#8243;,&#8221;ai_score&#8221;:8.7}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;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&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,19,12,15,13,7,11,5],"class_list":["post-57409","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-87","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Use of Weak Credentials in Slican telephone exchanges_CVE-2026-35089 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=57409\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Use of Weak Credentials in Slican telephone exchanges_CVE-2026-35089 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;In Slican telephone exchanges secure key is generated in a predictable manner using properties of the telephone exchange which can be obtained without authentication. 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