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Vulnerability Assessment

Weakness
CWE
CWE-310
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Cryptographic controls
Impact

CVSS score of 6.5 (MEDIUM). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.36%.
Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAI

A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15.1 Update 1), SIMATIC HMI. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-310. A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15.1 Update 1), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 und KTP900F (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Advanced (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Professional (All versions < V15.1 Update 1), SIMATIC WinCC (TIA Portal) (All versions < V15.1 Update 1), SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions). An attacker with network access to affected devices could potentially obtain a TLS session key. If the attacker is able to observe TLS traffic between a legitimate user and the device, then the attacker could decrypt the TLS traffic. The security vulnerability could be exploited by an attacker who has network access to the web interface of the device and who is able to observe TLS traffic between legitimate users and the web interface of the affected device. The vulnerability could impact the confidentiality of the communication between the affected device and a legitimate user. At the time of advisory publication no public exploitation of the security vulnerability was known. Affected products include: Siemens Simatic Hmi Comfort Panels Firmware, Siemens Simatic Hmi Comfort Outdoor Panels Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp400F Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp700 Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp700F Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionCVE.org

A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15.1 Update 1), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 und KTP900F (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Advanced (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Professional (All versions < V15.1 Update 1), SIMATIC WinCC (TIA Portal) (All versions < V15.1 Update 1), SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions). An attacker with network access to affected devices could potentially obtain a TLS session key. If the attacker is able to observe TLS traffic between a legitimate user and the device, then the attacker could decrypt the TLS traffic. The security vulnerability could be exploited by an attacker who has network access to the web interface of the device and who is able to observe TLS traffic between legitimate users and the web interface of the affected device. The vulnerability could impact the confidentiality of the communication between the affected device and a legitimate user. At the time of advisory publication no public exploitation of the security vulnerability was known.

Threat Intelligence Overview

EPSS Score
0.4%
Top 41% exploitable
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Controlled
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_wincc_runtime:*:*:*:*:advanced:*:*:*
cpe:2.3:a:siemens:simatic_wincc_runtime:*:*:*:*:professional:*:*:*
cpe:2.3:o:siemens:simatic_hmi_tp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_mp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_op_firmware:*:*:*:*:*:*:*:*

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Same weakness CWE-310 – Cryptographic Issues

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References

Advisories & patches
ADVISORY https://cert-portal.siemens.com/productcert/pdf/ssa-804486.pdf ADVISORY https://vuldb.com/vuln/135049 REF http://www.securityfocus.com/bid/108412 REF https://www.us-cert.gov/ics/advisories/ICSA-19-134-09

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