Actively exploited · Published Mar 30, 2026 · Assigned by checkpoint
CVE-2026-3502TrueConf Client Update Integrity Verification Bypass
High 7.8 Exploited
In plain English
A high-severity security flaw in TrueConf Client from TrueConf. Attackers are actively exploiting it in the wild (listed by CISA on April 2, 2026). The chance it is exploited in the next 30 days is estimated at 5.8% (higher than 93% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Apr 16, 2026.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TrueConf | TrueConf Client | TrueConf Client versions 8.1.0 through 8.5.2 |
Weakness: CWE-494 · Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L