Quick answers
- Is CVE-2026-124012 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124012 being exploited in the wild.
- How severe is CVE-2026-124012?
- High severity, with a CVSS score of 8.1, published 12 November 2026.
- Which products and versions are affected?
- Copeland XWEB EVO 5.6.2 through 5.8.8.
- Is there a fix for CVE-2026-124012?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-124012 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-124012?
- Check whether you run Copeland XWEB EVO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in the Users.authenticate function within lualib_users.lua, which synthesizes the Administrator account configuration without validating any stored password secret. The Administrator account is configured to use password_mode daily_password, allowing attackers who can derive the MAC-based daily password generation to authenticate without a properly stored credential. Successful exploitation grants full administrative session access to the device.
Affected products
- Copeland XWEB EVO 5.6.2 through 5.8.8
Timeline
- 2026-11-12: disclosed