PatchTheCVECVE-2026-3502: TrueConf Client Download of Code Without Integrity Check Vulnerability
CVE-2026-3502 is a high-severity flaw (CVSS 7.8) affecting trueconf, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- EPSS top 7%: very likely to be exploited
- Exploited in the wild (CISA KEV)
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Adjacent network |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Required |
| EPSS exploit chance | 5.8% (top 7%) |
| CISA exploited list | Yes, fix due 2026-04-16 |
| Weakness | CWE-494 |
| Published | 2026-03-30 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Exploited Added to the CISA Known Exploited Vulnerabilities list
- Deadline CISA due date for US federal agencies to patch
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: fevar54/CVE-2026-3502---TrueConf-Client-Update-Hijacking-PoC (0 stars)
- GitHub PoC: fevar54/CVE-2026-3502-Scanner---TrueConf-Vulnerability-Detection-Tool (0 stars)
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-3502?
trueconf: upgrade to 8.5.3.884. Exact commands for each OS are on this page.
Is CVE-2026-3502 being exploited?
Yes. CVE-2026-3502 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.
What does CVE-2026-3502 affect?
CVE-2026-3502 affects trueconf. Severity is high (CVSS 7.8). 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 installe
How urgent is CVE-2026-3502?
Priority 76/100. High severity; EPSS top 7%: very likely to be exploited; Exploited in the wild (CISA KEV)