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

Source: https://junglewise.ai/threats/cve-2026-124003-xweb-evo-before-5-6-2-contains-a-command-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-12. Updated: 2026-11-12  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/xweb-evo). Vendors: [Copeland](https://junglewise.ai/threats/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

- [https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate](https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate)
- [https://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf](https://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf)

## Related threats

- [Copeland XWEB EVO authentication bypass in password reset](https://junglewise.ai/threats/cve-2026-124015-xweb-evo-5-6-2-through-5-8-8-contains-an-authentication-bypass)
- [Copeland XWEB EVO arbitrary file write](https://junglewise.ai/threats/cve-2026-124014-xweb-evo-4-3-0-through-5-8-8-contains-an-unauthenticated)
- [Copeland XWEB EVO OS command injection in api.lua](https://junglewise.ai/threats/cve-2026-124013-xweb-evo-5-6-2-through-5-8-8-contains-an-authenticated-os)
- [Copeland XWEB EVO hardcoded credential authentication bypass](https://junglewise.ai/threats/cve-2026-124012-xweb-evo-5-6-2-through-5-8-8-contains-a-hardcoded-credential)
- [Copeland XWEB EVO information disclosure in sysinfo.lua](https://junglewise.ai/threats/cve-2026-124011-xweb-evo-5-6-2-through-5-8-8-contains-an-information-disclosure)