Search/CVE-2021-25660
● CVE — High

CVE-2021-25660

VendorsiemensProductsimatic hmi ktp mobile panels ktp400f firmware, simatic hmi ktp mobile panels ktp700 firmware, simatic hmi ktp mobile panels ktp700f firmware, simatic hmi ktp mobile panels ktp900 firmware, simatic hmi ktp mobile panels ktp900f firmware, simatic wincc runtime advanced, simatic hmi comfort outdoor panels 15" firmware, simatic hmi comfort outdoor panels 7" firmware, simatic hmi comfort panels 22" firmware, simatic hmi comfort panels 4" firmwareDiscoveredMay 12, 2021UpdatedJun 2, 2026

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…

CVSS v3.1
7.5 HIGH
EPSS
0.99%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 31, 2026
▲ 0.02pp
0.97% → 0.99% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Connections
11 relationships
Timeline
disclosure → media coverage
May 12, 2021
Disclosure — published as a CVE record. · last revised by NVD Jun 2, 2026