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Advantech EKI-1242EIMS CVE-2026-73174

| EUVDEUVD-2026-80726 HIGH
Cleartext Transmission of Sensitive Information (CWE-319)
2026-09-16 Nozomi GHSA-xm69-j9rc-98cx
8.7
CVSS 4.0 · Vendor: Nozomi
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Severity by source

Vendor (Nozomi) PRIMARY
8.7 HIGH
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.5 MEDIUM

Passive adjacent interception of cleartext management traffic yields confidentiality loss only (C:H); a passive observer cannot modify or deny, so I:N/A:N, and AV:A reflects same-segment adjacency.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Nozomi).

CVSS VectorVendor: Nozomi

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Metadata Corrected
Sep 16, 2026 - 13:40 vuln.today
tag: Advantech added
Analysis Generated
Sep 16, 2026 - 13:23 vuln.today
CVE Published
Sep 16, 2026 - 12:59 cve.org
HIGH 8.7

DescriptionCVE.org

Nozomi Networks Labs identified a CWE-319: Cleartext Transmission of Sensitive Information vulnerability in the edgserver management protocol of Advantech EKI-1242EIMS in firmware version V1.06.01 that allows a network-adjacent passive observer to intercept management traffic and recover sensitive device identity and network metadata in cleartext.

AnalysisAI

Passive interception of the cleartext edgserver management protocol on Advantech EKI-1242EIMS and EKI-1242IEIMS devices running firmware V1.06.01 allows any observer positioned on the same network segment to recover sensitive device identity and network metadata as it traverses the wire. The vulnerability is unauthenticated and requires no user interaction (CVSS 4.0 vector AV:A/AC:L/AT:N/PR:N/UI:N), but our independent assessment scopes the real-world impact to confidentiality only (CVSS 3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) because a purely passive observer cannot alter or disrupt device behavior - the CVSS 4.0 base score of 8.7 reflects the vector's asserted high integrity and availability impact, which is not supported by the exploitation conditions. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires the attacker to occupy a network-adjacent position (AV:A) - same broadcast/physical segment as the EKI-1242EIMS/EKI-1242IEIMS gateway - from which they can passively observe the edgserver management protocol traffic. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuinely lower-priority issue than its 8.7 CVSS 4.0 score suggests. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch version is specified in the provided intelligence - the Advantech advisory (https://advcloudfiles.advantech.com/cms/5dafee28-ad53-4d07-a328-7896fcc24b6e/Security%20Advisory%20PDF%20File/SECURITY-ADVISORY----EKI-1242IEIMS-updated-20260904.pdf) and the Nozomi Networks advisory (https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-73174) should be consulted directly to confirm whether firmware later than V1.06.01 addresses the cleartext transmission, and that fix should be applied when confirmed. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Advantech EKI-1242EIMS and EKI-1242IEIMS devices running firmware V1.06.01, determine which network segments carry edgserver management traffic, and isolate those segments from untrusted hosts using VLANs, ACLs, or firewall rules; disable edgserver management if it is not operationally required. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-73172 CRITICAL
9.3 Sep 16

Unauthenticated OS command injection in the edgserver management service of Advantech EKI-1242EIMS and EKI-1242IEIMS gat

CVE-2026-73173 HIGH
8.8 Sep 16

Advantech EKI-1242EIMS and EKI-1242IEIMS industrial gateways running firmware V1.06.01 expose their edgserver management

CVE-2026-73177 HIGH
8.6 Sep 16

Authenticated administrators with network reachability to the web management interface of Advantech EKI-1242EIMS and EKI

CVE-2026-73176 HIGH
8.6 Sep 16

Authenticated OS command injection in the web management interface of Advantech EKI-1242IEIMS and EKI-1242EIMS industria

CVE-2026-73171 HIGH
8.6 Sep 16

An authenticated file-overwrite vulnerability in the backup-restore workflow of Advantech EKI-1242EIMS (and EKI-1242IEIM

CVE-2026-73170 HIGH
8.6 Sep 16

Arbitrary Lua code execution is possible on Advantech EKI-1242EIMS and EKI-1242IEIMS industrial Modbus gateways running

CVE-2026-73167 HIGH
8.6 Sep 16

OS command injection in the web management interface of the Advantech EKI-1242IEIMS and EKI-1242EIMS industrial gateways

CVE-2026-73166 HIGH
8.6 Sep 16

Code injection in the web management interface of Advantech EKI-1242IEIMS (and the closely related EKI-1242EIMS) industr

CVE-2026-73165 HIGH
8.6 Sep 16

OS command injection in the web management interface of Advantech EKI-1242IEIMS and EKI-1242EIMS industrial devices runn

CVE-2026-73164 HIGH
8.6 Sep 16

Authenticated high-privileged users of Advantech EKI-1242IEIMS and EKI-1242EIMS industrial gateways running firmware V1.

CVE-2026-73163 HIGH
8.6 Sep 16

OS command injection in the web management interface of Advantech EKI-1242IEIMS industrial gateways (firmware V1.06.01)

CVE-2026-19535 HIGH
8.6 Sep 16

Cross-site request forgery in the LuCI administrative web interface of Advantech EKI-1242IEIMS running firmware V1.06.01

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CVE-2026-73174 vulnerability details – vuln.today

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