CVE-2026-124005 Dixell/Copeland XWEB EVO Predictable Administrator Password Generation
Remote attackers can derive the XWEB EVO administrator password from the MAC address and date, gaining full device access.
- 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-2026-124005?
CVE-2026-124005 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 4.3.0 through 5.8.8 contains a weak password generation vulnerability that allows remote attackers to derive the Administrator code-of-the-day password using only the device MAC address and date, with no server secret involved. Attackers can analyze the firmware binary xwpasswd, which itself functions as the password generator, to compute valid Administrator credentials offline and authenticate to the device without authorization. This product line reached it's end of service date in March 2026.
Weakness: CWE-330
Which versions are affected by CVE-2026-124005?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-124005?
No fix has been published for CVE-2026-124005 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-2026-124005 being exploited?
There is no known exploitation of CVE-2026-124005 in the wild and no public exploit code.
Sources
Also known as GHSA-xwmr-hvw2-h494.