CVE-2026-3893

CRITICAL 9.4

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

CVSS Score

9.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-306
Vendor	carlson software
Product	vasco-b gnss receiver
Published	Apr 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

High

Affected Versions

Carlson Software / VASCO-B GNSS Receiver

0 < 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

carlsonsw.com: https://www.carlsonsw.com/support-and-training/ cve.org: https://www.cve.org/CVERecord?id=CVE-2026-3893 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-113-02.json

Credits

Souvik Kandar reported this vulnerability to CISA.