Detections
Analytics

Copeland XWEB Pro Unexpected Status Code or Return Value (CVE-2026-25085)

high Tenable OT Security Plugin ID 506227

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, in which an unexpected return value from the authentication routine is later on processed as a legitimate value, resulting in an authentication bypass.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Upgrade XWEB Pro to firmware version 1.13 or later. The update is available from the Copeland software update page (https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate) or, on a device with internet access, from the menu SYSTEM -- Updates | Network.

See Also

https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10

https://www.copeland.com/en-us/product-security-resources

http://www.nessus.org/u?520e075b

Plugin Details

Severity: High

ID: 506227

File Name: tenable_ot_copeland_CVE-2026-25085.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 10/14/2026

Updated: 10/14/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.16

CVSS v3

Risk Factor: High

Base Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS v4

Risk Factor: High

Base Score: 8.8

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:copeland:xweb_300d_pro_firmware, cpe:/o:copeland:xweb_500b_pro_firmware, cpe:/o:copeland:xweb_500d_pro_firmware, cpe:/o:copeland:xweb_pro_firmware

Required KB Items: Tenable.ot/Copeland

Exploit Ease: No known exploits are available

Patch Publication Date: 2/26/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-25085

CWE: 394

ICSA: 26-057-10