{"id":"CVE-2026-3502","aliases":["EUVD-2026-17162","GHSA-33r5-g5m3-5m79"],"status":"published","title":"TrueConf Client Update Integrity Verification Bypass","description":"TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.05845,"percentile":0.93238,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-494"],"published":"2026-03-30T18:05:42Z","modified":"2026-06-17T10:43:41Z","kev":{"date_added":"2026-04-02","due_date":"2026-04-16","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-04-02"},{"source":"kev","since":"2026-04-02"}],"exploits":[{"source":"pocgithub","id":"fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC","title":"fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC","date":"2026-04-04","url":"https://github.com/fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC"},{"source":"pocgithub","id":"fevar54/CVE-2026-3502-Scanner---TrueConf-Vulnerability-Detection-Tool","title":"fevar54/CVE-2026-3502-Scanner---TrueConf-Vulnerability-Detection-Tool","date":"2026-04-04","url":"https://github.com/fevar54/CVE-2026-3502-Scanner---TrueConf-Vulnerability-Detection-Tool"}],"products":[{"vendor":"trueconf","product":"client"},{"vendor":"trueconf","product":"trueconf"},{"vendor":"trueconf","product":"trueconf client"}],"references":[{"url":"https://trueconf.com/blog/update/trueconf-8-5","tags":["Product","Release Notes"]},{"url":"https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3502"},{"url":"https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets"},{"url":"https://github.com/advisories/GHSA-33r5-g5m3-5m79"}],"sources":{"cve":[{"id":"CVE-2026-3502","title":"TrueConf Client Update Integrity Verification Bypass","description":"TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","status":"published","published":"2026-03-30T18:05:42.806Z","modified":"2026-04-03T03:55:23.638Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-494"],"updated_at":"2026-11-02T13:49:09.229322Z"}],"euvd":[{"id":"EUVD-2026-17162","description":"TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","status":"published","published":"2026-03-30T18:05:42Z","modified":"2026-04-03T03:55:23Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"exploited_since":"2026-04-02","updated_at":"2026-11-02T19:25:17.32175Z"}],"ghsa":[{"id":"GHSA-33r5-g5m3-5m79","title":"TrueConf Client downloads application update code and applies it without performing verification....","description":"TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","status":"published","published":"2026-03-30T21:31:04Z","modified":"2026-04-02T18:31:37Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-494"],"updated_at":"2026-11-02T15:07:05.449461Z"}],"kev":[{"id":"CVE-2026-3502","title":"TrueConf Client Download of Code Without Integrity Check Vulnerability","description":"TrueConf Client contains a download of code without integrity check vulnerability. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","cwes":["CWE-494"],"kev":{"date_added":"2026-04-02","due_date":"2026-04-16","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2026-3502","description":"TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.","status":"published","published":"2026-03-30T19:16:27.053Z","modified":"2026-06-17T10:43:41.01Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-494"],"updated_at":"2026-11-02T14:12:12.261218Z"}]}}