CVE entry · CVE-2026-3502
CVE-2026-3502: TrueConf Client Download of Code Without Integrity Check Vulnerability
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.
- Actively exploited: added to CISA’s KEV catalog on April 2, 2026.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: April 16, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes TrueConf Client, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (trueconf.com)
- Vendor advisory or reference cited by CISA (trueconf.com)
- NVD entry (NIST)
- CISA KEV catalog