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9.8
Copeland XWEB Pro: Unauthenticated Access to System
CVE-2026-21718
Summary
Copeland XWEB Pro versions 1.12.1 and earlier allow anyone to access the system without logging in. This means an attacker can gain access to sensitive data and perform actions as if they were authorized. Update to the latest version to fix this issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| copeland | xweb_300d_pro_firmware | <= 1.12.1 | – |
| copeland | xweb_500d_pro_firmware | <= 1.12.1 | – |
| copeland | xweb_500b_pro_firmware | <= 1.12.1 | – |
Original title
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 exe...
Original 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.
version 1.12.1 and prior, enabling any attackers to bypass the
authentication requirement and achieve pre-authenticated code execution
on the system.
nvd CVSS3.1
9.8
Vulnerability type
CWE-327
Use of a Broken Cryptographic Algorithm
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-05... Third Party Advisory
- https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate Product
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10 Third Party Advisory US Government Resource
Published: 27 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026