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Fencer Vulns
critical 9.4

CVE-2026-3893 json

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

published 2026-04-28 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-26081

cvss
9.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

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.

Patch / fix

  • Carlson Software VASCO-B GNSS Receiver 1.4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-113-02 updated cvss 9.4

Carlson Software VASCO-B GNSS Receiver

  • Carlson Software VASCO-B GNSS Receiver <1.4.0
    affected: mitigation “Carlson Software recommends users update to Version 1.4.0 or greater. For more information contact Carlson Software https://www.carlsonsw.com/support-and-training/” carlsonsw.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.4 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

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.