CVE-2026-124012
Dixell/Copeland XWEB EVO Hardcoded Administrator Daily Password Authentication Bypass
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
XWEB EVO 5.6.2 through 5.8.8 contains a hardcoded credential vulnerability where the Administrator web account is configured to use password_mode daily_password with no stored password, as the Users.authenticate function in lualib_users.lua synthesizes the Administrator configuration without validating any stored secret. Attackers who can derive the MAC-based daily password can authenticate as Administrator to obtain a full admin session on the device. This product line reached it's end of service date in March 2026.
| CWE | CWE-798 |
| Vendor | copeland |
| Product | xweb evo |
| Published | Nov 12, 2026 |
| Last Updated | Nov 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Copeland / XWEB EVO
5.6.2 ≤ 5.8.8
References
webapps.copeland.com: https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate webapps.copeland.com: https://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf vulncheck.com: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-hardcoded-administrator-daily-password-authentication-bypass
Credits
Valentin Lobstein (Chocapikk)