TrueConf Client Update Integrity Verification Bypass (CVE-2026-3502) | HOL Guard CVE

High severityKnown ExploitedCVE-2026-3502

TrueConf Client Update Integrity Verification Bypass

Answer in brief

CVE-2026-3502 records a High severity vulnerability in TrueConf Client Update Integrity Verification Bypass. The current sources mark it as known exploited. The current feed maps TrueConf/TrueConf Client (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 30, 2026Updated Apr 16, 2026Source checked Sep 20, 2026First seen by HOL May 24, 2026Material review Apr 16, 2026

Upstream Advisory

Key facts

Risk: High
Exploitation: Known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TrueConf/TrueConf Client (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TrueConf/TrueConf Clientgeneric	TrueConf Client versions 8.1.0 through 8.5.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for TrueConf/TrueConf Client.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Mar 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Apr 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
May 24, 2026
Added to CISA KEV
Apr 2, 2026
Evidence: source:kev:kev:kev:record

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.