Carlson Software VASCO-B GNSS Receiver

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Summary
Successful exploitation of this vulnerability could enable a remote attacker to alter critical system functions or disrupt device operation.
The following versions of Carlson Software VASCO-B GNSS Receiver are affected:

VASCO-B GNSS Receiver <1.4.0 (CVE-2026-3893)





CVSS
Vendor
Equipment
Vulnerabilities




v3 9.4
Carlson Software
Carlson Software VASCO-B GNSS Receiver
Missing Authentication for Critical Function




Background

Critical Infrastructure Sectors: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States


Vulnerabilities

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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.
View CVE Details

Affected Products
Carlson Software VASCO-B GNSS Receiver

Vendor:Carlson Software
Product Version:Carlson Software VASCO-B GNSS Receiver: <1.4.0
Product Status:known_affected


Remediations
MitigationCarlson Software recommends users update to Version 1.4.0 or greater. For more information contact Carlson Software https://www.carlsonsw.com/support-and-training/https://www.carlsonsw.com/support-and-training/

Relevant CWE: CWE-306 Missing Authentication for Critical Function

Metrics




CVSS Version
Base Score
Base Severity
Vector String




3.1
9.4
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H








Acknowledgments

Souvik Kandar reported this vulnerability to CISA


Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

Revision History

Initial Release Date: 2026-04-23




Date
Revision
Summary




2026-04-23
1
Initial Publication




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-advisories/icsa-26-113-02

2026-04-23 12:00 UTC
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