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CVE-2026-124002

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

  • Critical 9.8
  • A public exploit reference is listed

Description

XWEB EVO versions 5.2.3 through before 5.7.0 contains a pre-authentication OS command injection vulnerability that allows unauthenticated remote attackers to execute arbitrary OS commands by injecting shell metacharacters into the username field of login.lua, cleanout.lua, or api.lua before the password check occurs. Attackers can exploit this flaw combined with the setuid-root wlua interpreter to execute commands with root privileges, achieving full system compromise. This product line reached it's end of service date in March 2026.

Key facts

Published
12 Nov 2026
Last changed
13 Nov 2026
Assigned by
VulnCheck
EPSS
3.224% likely to be exploited in the next 30 days, higher than 88.444% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: poc; Automatable: yes; Technical impact: total

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

VendorProductVersions
CopelandXWEB EVO
  • Default status: unaffected
  • 5.2.3 up to but excluding 5.7.0 (affected)
  • 5.7.0 (unaffected)

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

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References