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CVE-2026-3502— TrueConf Client Update Integrity Verification Bypass

Quick assessment

Affected
TrueConf TrueConf Client
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TrueConf Client是立陶宛TrueConf公司的一个视频会议与协作软件客户端。 TrueConf Client存在安全漏洞，该漏洞源于下载应用更新代码时未执行验证，可能导致攻击者替换篡改的更新有效载荷并执行任意代码。

CVSS 7.8 · High KEV EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3502

Vulnerability Information
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Vulnerability Title
TrueConf Client Update Integrity Verification Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
TrueConf Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TrueConf Client是立陶宛TrueConf公司的一个视频会议与协作软件客户端。 TrueConf Client存在安全漏洞，该漏洞源于下载应用更新代码时未执行验证，可能导致攻击者替换篡改的更新有效载荷并执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
TrueConf TrueConf Client TrueConf Client versions 8.1.0 through 8.5.2 -

II. Public POCs for CVE-2026-3502

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III. Intelligence Information for CVE-2026-3502

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Security Blog Posts for CVE-2026-3502 (1)

IV. Related Vulnerabilities

Same vendor: TrueConf
Same weakness: CWE-494

V. Comments for CVE-2026-3502

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