# CVE-2026-3502: TrueConf Client Update Integrity Verification Bypass

> CVE-2026-3502: TrueConf Client Update Integrity Verification Bypass. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2026-3502
Last updated: 2026-06-17T10:43:41Z

- Published: 2026-03-30 18:05 UTC · Updated: 2026-06-17 10:43 UTC · Assigner: checkpoint
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
- EPSS: 5.6%, 93th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-04-02, federal due date 2026-04-16, ransomware use: Unknown
- CWE: CWE-494

## 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.

## CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- TrueConf: TrueConf Client

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-3502)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-3502)
- [https://trueconf.com/blog/update/trueconf-8-5](https://trueconf.com/blog/update/trueconf-8-5)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-3502 · Markdown: https://rewindex.com/cve/CVE-2026-3502.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-3502 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:21.540Z