CVE-2026-3502: TrueConf Client Download of Code Without Integrity Check Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2026-04-02. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• TrueConf TrueConf: before 8.5.3.884 (fixed in 8.5.3.884)

Published 2026-03-30. Last modified 2026-06-17.