What is the CVSS score of CVE-2021-25660?

CVE-2021-25660 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.5%.

Is there a patch available for CVE-2021-25660?

Yes, a patch is available for CVE-2021-25660. Update the affected software to the latest version immediately.

Simatic Hmi Ktp Mobile Panels Ktp400F Firmware CVE-2021-25660

HIGH

Access of Memory Location After End of Buffer (CWE-788)

2021-05-12 productcert@siemens.com

Buffer Overflow Siemens Simatic 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 Hmi Comfort Outdoor Panels 7 Firmware Simatic Hmi Comfort Outdoor Panels 15 Firmware Simatic Hmi Comfort Panels 4 Firmware Simatic Hmi Comfort Panels 22 Firmware Simatic Wincc Runtime Advanced

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

May 12, 2021 - 14:15 cve.org

HIGH 7.5

DescriptionCVE.org

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 server side when sending data from the client, which could result in a Denial-of-Service condition.

AnalysisAI

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Technical ContextAI

This vulnerability is classified under CWE-788. 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 server side when sending data from the client, which could result in a Denial-of-Service condition. Affected products include: Siemens Simatic Hmi Comfort Outdoor Panels 7\" Firmware, Siemens Simatic Hmi Comfort Outdoor Panels 15\" Firmware, Siemens Simatic Hmi Comfort Panels 4\" Firmware, Siemens Simatic Hmi Comfort Panels 22\" Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp400F Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.