CVE-2026-124004

Description

XWEB EVO before 5.6.2 contains a hardcoded backdoor password vulnerability that allows unauthenticated remote attackers to gain full administrative access to the built-in Administrator account. Attackers can authenticate using the hardcoded credential xwebevonewgeneration in a single request to obtain a complete admin session and full control over the application. This product line reached it's end of service date in March 2026.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 9.3CVSS 4.0, Criticalfrom the CNA (VulnCheck)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
• 9.8CVSS 3.1, Criticalfrom the CNA (VulnCheck)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 19 Oct 2026 VulnCheck CVD team reported to Copeland PSIRT
2. 19 Oct 2026 Copeland PSIRT acknowledged receipt
3. 5 Nov 2026 Copeland PSIRT follows up stating that given the EOS status, they will not be carrying out a comparative analysis against previously disclosed vulnerabilities
4. 12 Nov 2026 Published

Weakness

• CWE-798

References

• Software Downloadpatchproduct
• End of Support Announcementvendor-advisory
• VulnCheck Advisory: Dixell/Copeland XWEB Hardcoded Administrator Backdoor Passwordthird-party-advisory
• VulnCheck Blogtechnical-descriptionexploit