CVE-2026-3893

CRITICAL

Carlson Software VASCO-B GNSS Receiver Missing Authentication for Critical Function

Title source: cna

Description

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.

References (3)

https://www.carlsonsw.com/support-and-training/

https://www.cve.org/CVERecord?id=CVE-2026-3893

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-113-02.json

View Writeup ZIP pw:eip

Scores

CVSS v3 9.4

EPSS 0.0006

EPSS Percentile 19.3%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-306

Status published

Products (2)

Carlson Software/VASCO-B GNSS Receiver < 1.4.0

Carlson Software/VASCO-B GNSS Receiver 1.4.0

Published Apr 28, 2026

Tracked Since Apr 29, 2026