November 14, 2026

CVE Watchtower

CVE-2026-124002Copeland XWEB EVO OS Command Injection

NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.3)
Published Date
Nov 12, 2026
Last Modified
Nov 13, 2026
Exploitation Status
Public exploit available
EPSS Score (30-Day)
4.90%Probability
Root Weakness (CWE)
CWE-78: OS Command Injection β†—
The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.
CWE-306: Missing Authentication for Critical Function β†—
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)
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
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 9.8)
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Copeland XWEB EVO >= 5.2.3 and < 5.7.0
Patched Versions
  • Copeland XWEB EVO 5.7.0

What to do

Prioritize this fix. Exploit code is public, so attacks can follow quickly.

  1. Check whether you run Copeland XWEB EVO and which version.
  2. Update to a patched version listed above, then confirm the new version.
  3. Review logs and exposed services for signs of earlier compromise.

Timeline

  • Nov 12, 2026Published
  • Nov 13, 2026PoC status changed: POC to UNKNOWN
  • Nov 13, 2026PoC status changed: POC to UNKNOWN
  • Nov 13, 2026Record last modified
  • Nov 14, 2026PoC status changed: POC to UNKNOWN
  • Nov 14, 2026PoC status changed: POC to UNKNOWN
  • Nov 14, 2026PoC status changed: POC to UNKNOWN
  • Nov 14, 2026PoC status changed: POC to UNKNOWN

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 01:09 UTC