Exploited vulnerability · CISA KEV

Is CVE-2026-3502 exploited? Yes: in CISA KEV since 2 Apr 2026

Gociux · TrueConf Client · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-3502, TrueConf Client Download of Code Without Integrity Check Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 2 Apr 2026, 3 days after it was published. It affects TrueConf Client. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What it is

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.

What to do

1. Check whether you run it. Look for Client in your asset inventory, including appliances and cloud images. Stack check lists every exploited TrueConf CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 30 Mar 2026.
4. Get told next time. Email alerts when CISA adds a CVE for TrueConf.

References

• trueconf.com/blog/update/trueconf-8-5
• trueconf.com/downloads/windows.html
• nvd.nist.gov/vuln/detail/CVE-2026-3502

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in April 2026 · TrueConf scorecard · act-now radar.