CVE-2026-21718

CRITICAL

10.0

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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/27/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

copeland:xweb_300d_procopeland:xweb_300d_pro_firmwarecopeland:xweb_500b_procopeland:xweb_500b_pro_firmwarecopeland:xweb_500d_procopeland:xweb_500d_pro_firmware

Weaknesses (CWE)

CWE-327

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json(ics-cert@hq.dhs.gov)

https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate(ics-cert@hq.dhs.gov)

https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10(ics-cert@hq.dhs.gov)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.