{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123040","assignerOrgId":"e45d732a-8f6b-4b6b-be76-7420f6a2b988","state":"PUBLISHED","assignerShortName":"Kaspersky","dateReserved":"2026-11-05T07:33:05.167Z","datePublished":"2026-11-11T14:00:01.991Z","dateUpdated":"2026-11-12T04:56:21.339Z"},"containers":{"cna":{"providerMetadata":{"orgId":"e45d732a-8f6b-4b6b-be76-7420f6a2b988","shortName":"Kaspersky","dateUpdated":"2026-11-11T14:00:01.991Z"},"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-276","description":"CWE-276: Incorrect Default Permissions","type":"CWE"}]}],"affected":[{"vendor":"TrueConf","product":"TrueConf Server","platforms":["Linux"],"versions":[{"version":"4.7.2","status":"affected","lessThan":"5.5.6","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"An attacker who gains the ability to execute arbitrary code on a system with TrueConf Server (Linux) versions from 4.7.2 up to, but not including, 5.5.6 installed, running as the user trueconf (by exploiting some other vulnerability), can elevate their privileges to root."}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"baseScore":8.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"solutions":[{"lang":"en","value":"Update TrueConf Server (Linux) to versions 5.5.6 or newer."}],"workarounds":[{"lang":"en","value":"Perform a full check with anti-virus software that has up-to-date anti-virus databases and software modules."}],"timeline":[{"time":"2026-08-11T00:00:00.000Z","lang":"en","value":"Issue reported by Kaspersky ICS CERT to TrueConf"},{"time":"2026-08-18T00:00:00.000Z","lang":"en","value":"Issue confirmed by TrueConf"},{"time":"2026-11-10T00:00:00.000Z","lang":"en","value":"Advisory published by Kaspersky ICS CERT"}],"credits":[{"lang":"en","value":"Vyacheslav Kopeytsev from Kaspersky ICS CERT","type":"finder"},{"lang":"en","value":"Grigory Sablin from Kaspersky GERT","type":"finder"}],"references":[{"url":"https://ics-cert.kaspersky.com/advisories/2026/11/10/trueconf-server-linux-incorrect-default-permissions/","name":"KLCERT-26-059: TrueConf Server (Linux). Incorrect Default Permissions","tags":["third-party-advisory"]}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-11T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-123040"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-12T04:56:21.339Z"}}]}}