CVE-2026-3502
Actively exploited. CVE-2026-3502 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-02) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
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.
CSIRTS triage
- What
- TrueConf Client contains a download of code without integrity check vulnerability that may result in arbitrary code execution.
- Who is affected
- Users of TrueConf Client who can influence the update delivery path.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Install the latest update from TrueConf.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 92% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2026-3502: TrueConf Client Download of Code Without Integrity Check Vulnerabilitycisa-kev · 2026-04-02
External references
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[](https://www.csirts.com/cve/CVE-2026-3502)