7.5 High

CVE-2021-25662 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl

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.

Affected products and versions

Product	Affected versions	Fixed in
SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants)	Versions not published
SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants)	Versions not published
SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants)	Versions not published
SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants)	Versions not published
SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F	Versions not published
SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F	Versions not published
SIMATIC WinCC Runtime Advanced V15	Versions not published
SIMATIC WinCC Runtime Advanced V16	Versions not published
SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants)	Versions not published

Show the 2 other branches

Product	Affected versions	Fixed in
SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants)	Versions not published
SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F	Versions not published

References

cert-portal.siemens.com cert-portal.siemens.com
us-cert.cisa.gov us-cert.cisa.gov

Timeline

Published May 12, 2021
Last modified June 2, 2026

The 7 CVEs of SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) →

CVE-2021-27385 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl 7.5 High CVE-2021-27386 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl 7.5 High CVE-2021-25660 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl 7.5 High CVE-2021-25661 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl 7.5 High

Track this CVE