Description
A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC client fails to handle an exception properly if the program execution process is modified after sending a packet from the server, which could result in a Denial-of-Service condition.
Published: 2021-05-12
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-12554 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC client fails to handle an exception properly if the program execution process is modified after sending a packet from the server, which could result in a Denial-of-Service condition.
History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Subscriptions

Siemens Simatic Hmi Comfort Outdoor Panels 15\" Simatic Hmi Comfort Outdoor Panels 15\" Firmware Simatic Hmi Comfort Outdoor Panels 7\" Simatic Hmi Comfort Outdoor Panels 7\" Firmware Simatic Hmi Comfort Panels 22\" Simatic Hmi Comfort Panels 22\" Firmware Simatic Hmi Comfort Panels 4\" Simatic Hmi Comfort Panels 4\" Firmware Simatic Hmi Ktp Mobile Panels Ktp400f Simatic Hmi Ktp Mobile Panels Ktp400f Firmware Simatic Hmi Ktp Mobile Panels Ktp700 Simatic Hmi Ktp Mobile Panels Ktp700 Firmware Simatic Hmi Ktp Mobile Panels Ktp700f Simatic Hmi Ktp Mobile Panels Ktp700f Firmware Simatic Hmi Ktp Mobile Panels Ktp900 Simatic Hmi Ktp Mobile Panels Ktp900 Firmware Simatic Hmi Ktp Mobile Panels Ktp900f Simatic Hmi Ktp Mobile Panels Ktp900f Firmware Simatic Wincc Runtime Advanced
cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

Updated: 2026-06-02T19:22:03.971Z

Reserved: 2021-01-21T00:00:00.000Z

Link: CVE-2021-25662

cve-icon Vulnrichment

Updated: 2024-08-03T20:11:27.535Z

cve-icon NVD

Status : Modified

Published: 2021-05-12T14:15:11.343

Modified: 2026-06-02T20:16:26.330

Link: CVE-2021-25662

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses