CVE-2022-4980 Auth bypass in Crypto Application Server (CAS)

Critical 9.3 Published 19 Sep 2025 Updated 21 Nov 2025

Unauthenticated attackers can create admin accounts via the first-admin page, gaining control to modify ATM configurations and redirect funds.

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-2022-4980?

CVE-2022-4980 is a critical authentication bypass vulnerability in General Bytes Crypto Application Server (CAS), published on 19 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

General Bytes Crypto Application Server (CAS) beginning with version 20201208 prior to 20220531.38 (backport) and 20220725.22 (mainline) contains an authentication bypass in the admin web interface. An unauthenticated attacker could invoke the same URL used by the product's default-installation / first-admin creation page and create a new administrative account remotely. By gaining admin privileges, the attacker can change the ATM configuration resulting in redirected funds. Public vendor advisories and multiple independent writeups describe the vulnerability as a call to the page used for initial/default installation / first administration user creation; General Bytes has not publicly published the exact endpoint/parameter name. The issue was actively exploited in the wild against cloud-hosted and standalone CAS deployments (scanning exposed CAS instances on ports 7777/443), and publicly acknowledged by the General Bytes in September 2022.

Weakness: CWE-306

Which versions are affected by CVE-2022-4980?

How do I fix CVE-2022-4980?

No fix has been published for CVE-2022-4980 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2022-4980 being exploited?

There is no known exploitation of CVE-2022-4980 in the wild and no public exploit code.

Sources

Also known as GHSA-2wf3-7j9f-p79x.