Home/CVE/A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All ve
CVE

CVE-2021-25661

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All ve

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.

HIGH · CVSS 7.5 EPSS 0.00371
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-788Access of Memory Location After End of Buffer
▤

Affected Products & Versions

22
siemens simatic wincc runtime advanced< 16
siemens simatic wincc runtime advancedall versions
siemens simatic hmi comfort outdoor panels 7\" firmware< 16
siemens simatic hmi comfort outdoor panels 7\" firmwareall versions
siemens simatic hmi comfort outdoor panels 15\" firmware< 16
siemens simatic hmi comfort outdoor panels 15\" firmwareall versions
siemens simatic hmi comfort panels 4\" firmware< 16
siemens simatic hmi comfort panels 4\" firmwareall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · productcert@siemens.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 May 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

2
siemens-csafSSA-538778
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-131-12
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12Third Party AdvisoryUS Government Resource
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