Paper/Archive/CVE-2026-124012

CVE-2026-124012

Copeland XWEB EVO — Dixell/Copeland XWEB EVO Hardcoded Administrator Daily Password Authentication Bypass

CVSS 9.2 (CNA)9.2 / 10 × 3027.6 Not in CISA KEV+300.0 No EPSS score.000 × 200.0 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

XWEB EVO5.6.2 – 5.8.8–CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

patchwebapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate advisorywebapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf writeupvulncheck.com/advisories/dixell-copeland-xweb-evo-hardcoded-administrator-daily-password-authentication-bypass