CVE-2026-89207

Published Sep 16, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Unauthorized Remote Attacker Can Force Device into Protection Mode Disabling Web Access
Type Values Removed Values Added
First Time appeared Siemens
Siemens wtv676-hb6035 Web Interface
Siemens wtv776-hb6035 Web Interface
Vendors & Products Siemens
Siemens wtv676-hb6035 Web Interface
Siemens wtv776-hb6035 Web Interface
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthorized Remote Attacker Can Force Device into Protection Mode Disabling Web Access
Type Values Removed Values Added
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).
Weaknesses CWE-1287
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
siemens
Published
Updated
Sep 16, 2026, 6:13 PM
Reserved
Sep 11, 2026, 7:45 AM
Status
Deferred
Published
Sep 16, 2026, 8:16 AM
Modified
Sep 18, 2026, 7:25 PM