CVE-2026-3893 Carlson Software VASCO-B GNSS Receiver Missing Authentication for Critical Function
Attackers with network access can modify configuration and operational functions of the Carlson VASCO-B GNSS Receiver without authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3893?
CVE-2026-3893 is a critical missing authorization vulnerability in Carlson Software VASCO-B GNSS Receiver, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-3893?
How do I fix CVE-2026-3893?
No fix has been published for CVE-2026-3893 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-3893 being exploited?
There is no known exploitation of CVE-2026-3893 in the wild and no public exploit code.
Sources
Also known as GHSA-fc84-9gcf-p72v.