CVE-2026-3502
TrueConf Client Update Integrity Verification Bypass
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.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
TrueConf Client Update Integrity Verification Bypass
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.
- Record
CVE-2026-3502- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L - Weakness
- CWE-494
- Updated
- 2026-11-02
EUVDEUVD-2026-17162
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.
- Record
EUVD-2026-17162- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-33r5-g5m3-5m79
TrueConf Client downloads application update code and applies it without performing verification....
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.
- Record
GHSA-33r5-g5m3-5m79- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L - Weakness
- CWE-494
- Updated
- 2026-11-02
CISA KEV No score
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.
- Record
CVE-2026-3502- Weakness
- CWE-494
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-3502- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L - Weakness
- CWE-494
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC | 2026-04-04 |
| PoC in GitHub | fevar54/CVE-2026-3502-Scanner---TrueConf-Vulnerability-Detection-Tool | 2026-04-04 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-3502 is a high vulnerability (CVSS 7.8) in Trueconf Client, published March 30, 2026. CISA lists it as known to be exploited, since April 2, 2026. EUVD reports exploitation since April 2, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.85%, the 93rd percentile. No source names a fixed version.