CVE-2026-124006
Dixell/Copeland XWEB EVO Predictable Root Password Generation
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-798 CWE-1392 |
| 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
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-root-password-generation
Credits
Valentin Lobstein (Chocapikk)