CVE-2026-3502 TrueConf Client Download of Code Without Integrity Check
Attackers can execute arbitrary code by substituting tampered update payloads due to missing integrity verification in TrueConf Client updates.
- Exploited in the wild
- Since 2 Apr 2026
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-3502?
CVE-2026-3502 is a high-severity vulnerability in TrueConf Client, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-494
Which versions are affected by CVE-2026-3502?
It affects 1 product.
Products include Trueconf Trueconf.
How do I fix CVE-2026-3502?
No fix has been published for CVE-2026-3502 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 16 Apr 2026.
Is CVE-2026-3502 being exploited?
Yes. Attackers have exploited CVE-2026-3502 in the wild since at least 2 Apr 2026.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in TrueConf Client
Sources
Also known as GHSA-33r5-g5m3-5m79.