SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

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.

CRITICAL 9.4EPSS 0.37%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1
9.4 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
EPSS
0.37% probability · 31th percentile
CISA KEV
Not listed
Weakness
CWE-306
Source
ics-cert@hq.dhs.gov

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.