CVE-2026-89207 Details
Description
A vulnerability has been identified in WTV676-HB6035 Web Interface (All versions < V3.94), WTV776-HB6035 Web Interface (All versions < V4.17). Affected devices do not properly validate input received from backend services. This could allow an unauthenticated remote attacker to force the device into protection mode, which results in losing remote connectivity functions (Web Access).
A denial-of-service vulnerability has been identified in the Siemens WTV676-HB6035 and WTV776-HB6035 Web Interfaces, affecting all versions prior to WTV676 V3.94 and WTV776 V4.17. The vulnerability arises because the devices do not properly validate input from backend services. This flaw could enable an unauthenticated remote attacker to force the device into protection mode, thereby disabling remote connectivity functions such as Web Access.
Users are advised to update WTV676-HB6035 Web Interface to version 3.94 or later, and WTV776-HB6035 Web Interface to version 4.17 or later. For assistance, visit the Siemens support page.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 16, 2026CISA-ADP
Assessed Sep 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert-portal.siemens.com/productcert/html/ssa-823812.html | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1287 | Improper Validation of Specified Type of Input | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Siemens WTV676-HB6035 | < V3.94 |
CPE
Remediation
| |
| Siemens WTV776-HB6035 | < V4.17 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | CISA-ADP |
| Sep 16, 2026 | New CVE Received | [email protected] |
Volerion