{"id":"CVE-2026-35087","state":"PUBLISHED","title":"Authentication Bypass in Slican telephone exchanges","description":"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- 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.","publishedAt":"2026-05-27T12:42:04.409Z","updatedAt":"2026-05-27T15:39:44.033Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"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","source":"CERT-PL"},"assigner":"CERT-PL","products":["Slican IPx","Slican CCT-1668","Slican MAC-6400","Slican CXS-0424","Slican NCP"],"affected":[{"vendor":"Slican","product":"IPx","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.61.0040","versionType":"semver"}]},{"vendor":"Slican","product":"CCT-1668","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.56.0430","versionType":"semver"}]},{"vendor":"Slican","product":"MAC-6400","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.56.0430","versionType":"semver"}]},{"vendor":"Slican","product":"CXS-0424","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.30.0510","versionType":"semver"}]},{"vendor":"Slican","product":"NCP","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.24.0250","versionType":"semver"}]}],"references":["https://cert.pl/posts/2026/05/CVE-2026-35087"],"weaknesses":["CWE-288"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/35xxx/CVE-2026-35087.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35087","state":"PUBLISHED","datePublished":"2026-05-27T12:42:04.409Z","dateUpdated":"2026-05-27T15:39:44.033Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-04-01T11:23:16.117Z"},"containers":{"cna":{"title":"Authentication Bypass in Slican telephone exchanges","descriptions":[{"lang":"en","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- 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."}],"affected":[{"vendor":"Slican","product":"IPx","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.61.0040","versionType":"semver"}]},{"vendor":"Slican","product":"CCT-1668","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.56.0430","versionType":"semver"}]},{"vendor":"Slican","product":"MAC-6400","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.56.0430","versionType":"semver"}]},{"vendor":"Slican","product":"CXS-0424","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.30.0510","versionType":"semver"}]},{"vendor":"Slican","product":"NCP","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.24.0250","versionType":"semver"}]}],"references":[{"url":"https://cert.pl/posts/2026/05/CVE-2026-35087","tags":["third-party-advisory"]}],"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":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-05-27T12:51:19.907Z"},"credits":[{"lang":"en","type":"finder","value":"Grupa ŻN"}],"datePublic":"2026-05-27T12:41:00.000Z","source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T15:39:29.538641Z","id":"CVE-2026-35087","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T15:39:44.033Z"}}]}}}