CVE-2021-25661 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5