CVE-2021-22796 Auth bypass in C-Bus Toolkit (V1.15.9 and prior), C-Gate Server (V2.11.7 and prior)
Improper authentication in C-Bus Toolkit and C-Gate Server allows remote code execution via malicious file upload.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-22796?
CVE-2021-22796 is a high-severity authentication bypass vulnerability in C-Bus Toolkit (V1.15.9 and prior), C-Gate Server (V2.11.7 and prior), published on 11 Feb 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A CWE-287: Improper Authentication vulnerability exists that could allow remote code execution when a malicious file is uploaded. Affected Product: C-Bus Toolkit (V1.15.9 and prior), C-Gate Server (V2.11.7 and prior)
Weakness: CWE-287
Which versions are affected by CVE-2021-22796?
It affects 1 product.
Products include Schneider-Electric C-Gate Server.
How do I fix CVE-2021-22796?
No fix has been published for CVE-2021-22796 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-2021-22796 being exploited?
There is no known exploitation of CVE-2021-22796 in the wild and no public exploit code.
Sources
Also known as GHSA-f5vw-5hhh-hgvg.