Which products and versions are affected by CVE-2026-3502?

Affected: Trueconf; TrueConf Client versions >= TrueConf Client versions 8.1.0 through 8.5.2. The full list is in the CVE brief.

Is CVE-2026-3502 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 31, 2026.

Is CVE-2026-3502 in the CISA KEV catalog?

Yes. It was added on Apr 2, 2026 with a federal remediation due date of Apr 16, 2026.

Is there a public exploit for CVE-2026-3502?

Public exploit code is available.

Is there a fix for CVE-2026-3502?

Fixed versions are available, including Trueconf 8.5.3.884.

How urgently should CVE-2026-3502 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2026-3502

HighExploitedPublic exploit

TrueConf Client Update Integrity Verification Bypass

Published Mar 30, 2026 · Updated Apr 3, 2026

Key Facts

Patch immediately

CVE-2026-3502 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Trueconf, TrueConf Client.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 31, 2026. Public exploit code is available.
EPSS estimates a 0.3% probability of exploitation in the next 30 days.
Fixed versions are available, including Trueconf 8.5.3.884.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.8

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

EPSS (30-day exploit likelihood)

0.3%

Higher than 24.4% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-3502 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Apr 2, 2026	Apr 16, 2026	Not reported
Industry KEV feed	Mar 31, 2026	Apr 16, 2026	Not reported
CIRCL KEV	Apr 2, 2026	Apr 16, 2026	Not reported
ENISA EUVD	Apr 2, 2026	n/a	Not reported

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
TrueconfTrueconf	See advisory	8.5.3.884
TrueConf Client	>= TrueConf Client versions 8.1.0 through 8.5.2	n/a

Patched Releases

Trueconf

8.5.3.884

Timeline

Publicly disclosed
Mar 30, 2026
Added to Industry KEV feed
Mar 31, 2026
Added to CISA KEV
Apr 2, 2026
Added to CIRCL KEV
Apr 2, 2026
Added to ENISA EUVD
Apr 2, 2026
Last updated
Apr 3, 2026

Weakness Type

CWE-494 Download of Code Without Integrity Check

References

FAQ

Common Questions.

TrueConf Client downloads application update code and applies it without performing verification.
Affected: Trueconf; TrueConf Client versions >= TrueConf Client versions 8.1.0 through 8.5.2. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 31, 2026.
Yes. It was added on Apr 2, 2026 with a federal remediation due date of Apr 16, 2026.
Public exploit code is available.
Fixed versions are available, including Trueconf 8.5.3.884.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2026-3502 Running On Your Attack Surface?

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