What is CVE-2026-3893?

CVE-2026-3893 is a critical-severity vulnerability in Carlson Software Vasco-b Gnss Receiver, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-04-28.

How severe is CVE-2026-3893?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Auth bypass in Carlson Software Vasco-b Gnss Receiver

CVE-2026-3893

The Carlson VASCO-B GNSS Receiver lacks an authentication mechanism, allowing an attacker with network access to directly access and modify its configuration and operational functions without needing credentials.

Vulnerability class: Broken Authentication

EPSS: 0.001 (28.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

Affected products

Carlson Software Vasco-b Gnss Receiver — versions 0, 1.4.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2026-3893?: CVE-2026-3893 is a critical-severity vulnerability in Carlson Software Vasco-b Gnss Receiver, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-04-28.
How severe is CVE-2026-3893?: Critical severity. CVSS v3 base score is 9.4 out of 10.