What is CVE-2026-5768?

CVE-2026-5768 is a high-severity vulnerability in Fourth Frontier X2, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-05-29.

How severe is CVE-2026-5768?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Fourth Frontier X2

CVE-2026-5768

The Frontier X2 device allows unauthenticated BLE read/write access to critical GATT characteristics without enforcing pairing authentication or authorization. This allows attackers within BLE range to perform unauthorized control of devic…

Vulnerability class: Broken Authentication

EPSS: 0.000 (10.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fourth Frontier X2 — versions All versions
Fourth Frontier X Android Application — versions 0
Fourth Frontier X Ios Application — versions 0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2026-5768?: CVE-2026-5768 is a high-severity vulnerability in Fourth Frontier X2, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-05-29.
How severe is CVE-2026-5768?: High severity. CVSS v3 base score is 8.8 out of 10.