CVE-2026-124005
Dixell/Copeland XWEB EVO Predictable Administrator Password Generation
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-330 |
| 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
4.3.0 ≤ 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-predictable-administrator-password-generation
Credits
Valentin Lobstein (Chocapikk)