# CVE-2026-21718

## Summary

- **CVE ID:** CVE-2026-21718
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-327
- **Published:** Feb 27, 2026
- **Last Modified:** Mar 12, 2026

## Description

An authentication bypass vulnerability exists in Copeland XWEB Pro 
version 1.12.1 and prior, enabling any attackers to bypass the 
authentication requirement and achieve pre-authenticated code execution 
on the system.

## Affected Products

- Copeland — Copeland XWEB 300D PRO (0)
- Copeland — Copeland XWEB 500D PRO (0)
- Copeland — Copeland XWEB 500B PRO (0)

## References

- [CNA](https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate)
- [CNA](https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10)
- [CNA](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._