CVE-2026-124009 Dixell/Copeland XWEB EVO OS Command Injection via backup.lua
Authenticated attackers can run root commands on XWEB EVO controllers via the backup output path, fully compromising the system.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-124009?
CVE-2026-124009 is a high-severity command injection vulnerability in Copeland XWEB EVO, published on 12 Nov 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
XWEB EVO 5.2.3 through 5.8.8 contains an authenticated OS command injection vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the output device path parameter processed by backup.lua. Attackers can exploit the unescaped concatenation into mount, unzip, and related shell commands run via the wlua interpreter, including through the setuid xwbackup.cgi and xwrestore.cgi interfaces, to achieve full system compromise. This product line reached it's end of service date in March 2026.
Weakness: CWE-78
Which versions are affected by CVE-2026-124009?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-124009?
No fix has been published for CVE-2026-124009 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-124009 being exploited?
There is no known exploitation of CVE-2026-124009 in the wild and no public exploit code.
Sources
Also known as GHSA-pxcj-mc47-xhg9.