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Advisories

Dixell/Copeland XWEB EVO Predictable Root Password Generation

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Severity
critical
Date
Affecting

  • XWEB EVO <= 5.8.8

CWE
  • CWE-798 Use of Hard-coded Credentials
  • CWE-1392 Use of Default Credentials
CVSS
9.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Valentin Lobstein (Chocapikk)
Description
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.

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