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CVE-2026-3502

7.8, high Known exploited

TrueConf Client Download of Code Without Integrity Check Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
7.8, high high CVSS v3.1
EPSS, next 30 days
0.3% higher than 24.3% of scored CVEs
Exploitation
Confirmed in the wild
Published
30 Mar 20266 months ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 2 Apr 2026. US federal agencies had to remediate by 16 Apr 2026, a deadline that has passed.

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.

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.

Details

Vendor
TrueConf
Product
TrueConf Client
Weakness
CWE-494 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
cve@checkpoint.com

CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

References 3

Advisories 1

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other TrueConf CVEs

Every TrueConf CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-72529 TrueConf Server Missing Authentication for Critical Function Vulnerability KEV EPSS 1% 9.8, critical
  • CVE-2026-72530 TrueConf Server Code Injection Vulnerability KEV EPSS 2% 9, critical

Beyond this page

Is CVE-2026-3502 in your network?

This page tells you how dangerous CVE-2026-3502 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-3502 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-3502 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.