CVE-2020-36909 Secure Computing SnapGear Management Console SG560 3.1.5 Arbitrary File Read/Write

High 8.7 Published Updated

Authenticated attackers can read, write, and delete arbitrary files outside the intended directory via the edit_config_files CGI script.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-36909?

CVE-2020-36909 is a high-severity path traversal vulnerability in Secure Computing SnapGear Management Console SG560, published on 6 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

SnapGear Management Console SG560 3.1.5 contains a file manipulation vulnerability that allows authenticated users to read, write, and delete files using the edit_config_files CGI script. Attackers can manipulate POST request parameters in /cgi-bin/cgix/edit_config_files to access and modify files outside the intended /etc/config/ directory.

Weakness: CWE-22

Which versions are affected by CVE-2020-36909?

It affects 1 product.

Products include Securecomputing Snapgear Sg560 Firmware.

How do I fix CVE-2020-36909?

No fix has been published for CVE-2020-36909 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-36909 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36909 exists.

Sources

Also known as GHSA-4f8j-vhh2-g372.

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