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Advisories

Dixell/Copeland XWEB EVO Pre-Auth OS Command Injection via Password Field

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Severity
critical
Date
Affecting

  • XWEB EVO < 5.6.2

CWE
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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 before 5.6.2 contains a pre-authentication OS command injection vulnerability that allows unauthenticated remote attackers to execute arbitrary commands by injecting shell metacharacters into the password field. Attackers can exploit the unescaped interpolation of the password value into the hashpass invocation within login.lua, cleanout.lua, and api.lua to achieve root-level command execution via the setuid wlua interpreter. This product line reached it's end of service date in March 2026.

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