{"id":"CVE-2026-3502","published":"2026-03-30T19:16:27Z","modified":"2026-06-17T10:43:41Z","title":"TrueConf Client Download of Code Without Integrity Check Vulnerability","vendor":"TrueConf","product":"Client","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"TrueConf Client, the TrueConf client application, downloads application update code and applies it without verifying its integrity. An attacker able to influence the update delivery path can substitute a tampered payload that the updater may execute or install, potentially yielding code execution in the context of the updating process or user, which requires adjacent-network access, high privileges, and user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:15:27Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L","provenance":"source","from":"NVD"},"epss":{"score":0.05845,"percentile":0.93164,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-04-02","dueDate":"2026-04-16","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://trueconf.com/blog/update/trueconf-8-5 ; https://trueconf.com/downloads/windows.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-3502","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-03-31","exploitedFirstSeen":"2026-03-31","ransomware":false,"evidence":[{"url":"https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/","date":"2026-03-31"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-04-02"},{"url":"https://fortiguard.fortinet.com/threat-signal-report/6394","date":"2026-04-07"},{"url":"https://ti.qianxin.com/uploads/2026/10/29/20ab59a356a884498644cff73d47a13a.pdf","date":"2026-10-29"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 2026","url":"https://otx.alienvault.com/pulse/6ae4aefab0c2191cecd41862","created":"2026-10-30"},{"name":"Actively_Exploited_Kev | Oct 30, 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2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"}],"provenance":"machine"},"cwes":[{"id":"CWE-494","name":"Download of Code Without Integrity Check"}],"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"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502","tags":["US Government Resource"]}],"techniques":[{"id":"T1557","name":"Adversary-in-the-Middle","tactics":["collection","credential-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Adversary positions to tamper update delivery 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