CVE-2026-21718
Received Received - Intake
Authentication Bypass in Copeland XWEB Pro Enables Pre-Auth Code Execution

Publication date: 2026-02-27

Last updated on: 2026-02-27

Assigner: ICS-CERT

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.
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Meta Information
Published
2026-02-27
Last Modified
2026-02-27
Generated
2026-06-16
AI Q&A
2026-02-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21718
EUVD
EUVD-2026-8947
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
copeland xweb_300d_pro_firmware to 1.12.1 (inc)
copeland xweb_500d_pro_firmware to 1.12.1 (inc)
copeland xweb_500b_pro_firmware to 1.12.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-327 The product uses a broken or risky cryptographic algorithm or protocol.
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Executive Summary

This vulnerability is an authentication bypass in Copeland XWEB Pro version 1.12.1 and earlier. It allows attackers to bypass the authentication process entirely, enabling them to execute code on the system without needing to log in.

Impact Analysis

The impact of this vulnerability is severe. Attackers can gain pre-authenticated access to the system and execute arbitrary code, potentially leading to full system compromise, data theft, disruption of services, or further attacks within the network.

Compliance Impact

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