CVE-2026-124006 Dixell/Copeland XWEB EVO Predictable Root Password Generation
Attackers can derive the root password of XWEB EVO controllers and gain root access to the underlying OS; operators of these end-of-service units should care.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- 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-2026-124006?
CVE-2026-124006 is a critical weak cryptography vulnerability in Copeland XWEB EVO, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
XWEB EVO through 5.8.8 contains a predictable credential generation vulnerability that allows attackers to derive the Linux root password by computing a fixed prefix combined with a daily password value. Attackers can calculate the deterministic root credential, which before 5.7.0 was identical across all units and from 5.7.0 onward remains derivable from the MAC-based daily password, to gain unauthorized root access to the underlying operating system. This product line reached it's end of service date in March 2026.
Which versions are affected by CVE-2026-124006?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-124006?
No fix has been published for CVE-2026-124006 yet. Limit exposure of the affected software until one is available.
Upgrade, and use current algorithms from a well-maintained library. More about Weak cryptography.
Is CVE-2026-124006 being exploited?
There is no known exploitation of CVE-2026-124006 in the wild and no public exploit code.
Sources
Also known as GHSA-hp68-2m45-hqr3.