CVE-2026-25085

HIGH
2026-02-27 [email protected]
8.6
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 27, 2026 - 01:16 nvd
HIGH 8.6

Tags

Authentication Bypass Xweb 500d Pro Firmware Xweb 300d Pro Firmware Xweb 500b Pro Firmware

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.

Analysis

Copeland XWEB Pro firmware versions 1.12.1 and earlier suffer from an authentication bypass vulnerability where malformed authentication responses are incorrectly validated as legitimate, allowing unauthenticated remote attackers to gain unauthorized access. The flaw affects multiple XWEB Pro models (500d, 300d, and 500b) with a CVSS score of 8.6 indicating high severity, though no patch is currently available. …

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Remediation

Within 24 hours: Inventory all Copeland XWEB Pro installations and document versions; begin monitoring for suspicious authentication attempts. Within 7 days: Contact Copeland for patch availability and workaround guidance; implement network access controls restricting XWEB Pro access to trusted networks only. …

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Priority Score

43
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +43
POC: 0

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CVE-2026-25085 vulnerability details – vuln.today
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