CVE-2026-3502 — TrueConf Client Download of Code Without Integrity Check Vulnerability

Overview

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.

Vulnerability details

CVE ID

CVE-2026-3502

Vulnerability

TrueConf Client Download of Code Without Integrity Check Vulnerability

Vendor

TrueConf

Affected products

TrueConf: Client

Severity

HIGH

Exploitation status

Actively exploited in the wild (CISA KEV)

EPSS score

5.8% probability of exploitation in 30 days · 92th percentile

Published

2026-04-02

Remediation guidance

CVE-2026-3502 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.

Apply the vendor's official security update for TrueConf the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.

FIRST EPSS estimates a 5.8% probability that CVE-2026-3502 will be exploited within the next 30 days (92th percentile of all CVEs) — useful for risk-based patch sequencing.

Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.

Authoritative references

• NVD — National Vulnerability Database
• MITRE CVE Record
• CISA Known Exploited Vulnerabilities Catalog
• FIRST EPSS — Exploit Prediction Scoring