CVE-2026-124012

Dixell/Copeland XWEB EVO Hardcoded Administrator Daily Password Authentication Bypass

Assigner: VulnCheck
Reserved: 06.11.2026 Published: 12.11.2026 Updated: 13.11.2026

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.

Metrics

CVSS 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
CVSS Score: 9.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Copeland
Product	XWEB EVO
Versions	Default: unaffected affected from 5.6.2 to 5.8.8 (incl.)

Vendor

Copeland

Product

XWEB EVO

Versions

Default: unaffected

affected from 5.6.2 to 5.8.8 (incl.)

Credits

Valentin Lobstein (Chocapikk) finder

References

Problem Types

Use of Hard-coded Credentials CWE