CVE-2026-3502

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.

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

EPSS

5.75% chance of exploitation in the next 30 days, 93th percentile

CISA KEV

added 2026-04-02

Published

2026-03-30

Updated

2026-04-03

Proof-of-concept exploits (2)

• https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-south…
• fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC0★ · 2026-04-04

References

• CVE Record
• NVD entry

Related

• CVE-2023-21839
• CVE-2023-43654
• CVE-2024-21182
• CVE-2024-3094
• CVE-2024-42461
• CVE-2025-20343