CVE-2021-25661

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants)
Affected: Siemens SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants)
Affected: Siemens SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants)
Affected: Siemens SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants)
Affected: Siemens SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F
Affected: Siemens SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F
Affected: Siemens SIMATIC WinCC Runtime Advanced V15
Affected: Siemens SIMATIC WinCC Runtime Advanced V16
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12 third party advisory us government resource
https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-25661?
CVE-2021-25661 has been scored as a high severity vulnerability.
How to fix CVE-2021-25661?
To fix CVE-2021-25661, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-25661 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-25661 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-25661?
CVE-2021-25661 affects Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants), Siemens SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) , Siemens SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants), Siemens SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) , Siemens SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F, Siemens SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F , Siemens SIMATIC WinCC Runtime Advanced V15, Siemens SIMATIC WinCC Runtime Advanced V16.
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