CVE-2021-25661

7.5 HIGH

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl

Published: 2021-05-12 · Last updated: 2026-06-02

Severity and scoring

CVSS: 7.5 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-788

Affected products

Vendor	Product
siemens	simatic_hmi_comfort_outdoor_panels_15\"_firmware, simatic_hmi_comfort_outdoor_panels_7\"_firmware, simatic_hmi_comfort_panels_22\"_firmware

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 has an out-of-bounds memory access vulnerability that could be triggered on the client side when sending data from the server, which could result in a Denial-of-Service condition.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-25661
[Vendor advisory]https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf
[Other]https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12
[Vendor advisory]https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf
[Other]https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12

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Same CWE

CVE-2021-27384 — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl (9.8 CRITICAL)
CVE-2021-25660 — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl (7.5 HIGH)