Severity by source
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
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.
Primary rating from Vendor (Nozomi).
CVSS VectorVendor: Nozomi
Lifecycle Timeline
3DescriptionCVE.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
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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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-80726
GHSA-xm69-j9rc-98cx