Is CVE-2026-124003 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124003 being exploited in the wild.

How severe is CVE-2026-124003?

High severity, with a CVSS score of 7.8, published 12 November 2026.

Which products and versions are affected?

Copeland XWEB EVO before 5.6.2.

Is there a fix for CVE-2026-124003?

Yes: fixed in 5.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-124003 attacked?

It is attacked over the network.

Am I affected by CVE-2026-124003?

Check whether you run Copeland XWEB EVO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-124003: Copeland XWEB EVO command injection in Lua CGI interpreter

CVE-2026-124003 · Severity: high · CVSS 7.8 · Published 2026-11-12

XWEB EVO is a web-based control interface for HVAC systems used in commercial refrigeration and building management. A command injection vulnerability in the Lua CGI interpreter allows unauthenticated remote attackers to execute arbitrary system commands with root privileges by sending malicious input to a .lua endpoint, potentially compromising the entire controlled system.

Technologies: Copeland XWEB EVO. Vendors: Copeland.

Quick answers

Is CVE-2026-124003 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124003 being exploited in the wild.
How severe is CVE-2026-124003?: High severity, with a CVSS score of 7.8, published 12 November 2026.
Which products and versions are affected?: Copeland XWEB EVO before 5.6.2.
Is there a fix for CVE-2026-124003?: Yes: fixed in 5.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124003 attacked?: It is attacked over the network.
Am I affected by CVE-2026-124003?: Check whether you run Copeland XWEB EVO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 5.6.2

Technical details

The setuid-root Lua CGI interpreter (wlua) in XWEB EVO concatenates unsanitized user input directly into a system() call without proper argument escaping. An attacker can craft malicious input through a .lua CGI endpoint to inject shell metacharacters into the argv string, achieving arbitrary command execution with root privileges. No authentication is required to reach the vulnerable endpoint.

Affected products

Copeland XWEB EVO before 5.6.2

Timeline

2026-11-12: disclosed
2026-03: other: Product line reached end of service date

References

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