CVE-2026-3502 (GCVE-0-2026-3502)

Vulnerability from cvelistv5 – Published: 2026-03-30 18:05 – Updated: 2026-04-03 03:55
VLAI? CISA KEV
Title
TrueConf Client Update Integrity Verification Bypass
Summary
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
CWE
  • CWE-494 - Download of Code Without Integrity Check.
Assigner
References
Impacted products
Vendor Product Version
TrueConf TrueConf Client Affected: TrueConf Client versions 8.1.0 through 8.5.2
Create a notification for this product.
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 85bccd1e-c096-4f3a-a360-7e4220654ac0

Vulnerability ID: CVE-2026-3502

Status: Confirmed

Status Updated: 2026-04-02 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-02
Asserted: 2026-04-02
Scope
Notes: KEV entry: TrueConf Client Download of Code Without Integrity Check Vulnerability | Affected: TrueConf / Client | Description: 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. | 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. | Due date: 2026-04-16 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://trueconf.com/blog/update/trueconf-8-5 ; https://trueconf.com/downloads/windows.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-3502
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-494
Feed CISA Known Exploited Vulnerabilities Catalog
Product Client
Due Date 2026-04-16
Date Added 2026-04-02
Vendorproject TrueConf
Vulnerabilityname TrueConf Client Download of Code Without Integrity Check Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-04-02 21:00 UTC | Updated: 2026-04-02 21:00 UTC
Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.