CVE-2026-3502

CVE Enrichment

CVSS: 7.8 HIGH
EPSS: 5.58%
EPSS Percentile: 92.82%
CISA KEV: YES — Known Exploited 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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 31-Mar-2026 02:16
Last Modified: 17-Jun-2026 17:43
EPSS Date: 2026-10-25
CWE: CWE-494

CVSS Vector


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

CISA KEV Details

Date Added: 2026-04-02
Remediation Due: 2026-04-16
Known Ransomware Campaign Use: Unknown
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.
Notes: https://trueconf.com/blog/update/trueconf-8-5 ; https://trueconf.com/downloads/windows.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-3502

Affected Products / Versions

trueconf / trueconf
Version / affected range: * · before (exclusive) 8.5.3.884
cpe:2.3:a:trueconf:trueconf:*:*:*:*:*:windows:*:*

References

Last enrichment sync: 25-Oct-2026 21:43
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

In April 2026, CheckPoint Research reported that hackers were targeting a zero-day arbitrary file execution flaw in TrueConf, tracked as CVE-2026-3502, compromising users via trojanized client updates. Kaspersky Finds Head Mare Exploiting TrueConf Flaws to Trojanize Installers

Malware (3)

Threat Actors (1)

MITRE ATT&CK (9)

Vendors (2)

Products (3)

Industries (6)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.