EUVD-2026-80727
GHSA-r838-p3xg-9mfp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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
Remote unauthenticated access to port 5058 (AV:N/AC:L/PR:N/UI:N); invoking reconfig/firmware functions destroys integrity and availability (I:H/A:H) but exposes no data (C:N).
Primary rating from Vendor (Nozomi).
CVSS VectorVendor: Nozomi
Lifecycle Timeline
3DescriptionCVE.org
Nozomi Networks Labs identified a CWE-306: Missing Authentication for Critical Function vulnerability in the edgserver management protocol of Advantech EKI-1242EIMS in firmware version V1.06.01 that allows a remote unauthenticated attacker to invoke critical device-management functions, including network reconfiguration, reboot, reset, and firmware upgrade, by sending crafted requests to TCP port 5058.
AnalysisAI
Advantech EKI-1242EIMS and EKI-1242IEIMS industrial gateways running firmware V1.06.01 expose their edgserver management protocol on TCP port 5058 without any authentication, allowing a remote unauthenticated attacker who can reach that port to invoke critical device-management functions such as network reconfiguration, reboot, reset, and firmware upgrade. The flaw is a CWE-306 missing authentication for critical function issue with CVSS 8.8 (v4.0) and an independently assessed CVSS 3.1 of 8.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H); the vector contains PR:N, confirming no credentials or user interaction are required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network reachability to TCP port 5058 (the edgserver management protocol) on an Advantech EKI-1242EIMS or EKI-1242IEIMS gateway running firmware V1.06.01 - no authentication, credentials, or user interaction are needed (CWE-306). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine pre-authentication issue and should be treated as a real priority within its niche. … 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 | Patch status: patch available per vendor advisory - the supplied data does not specify an exact fixed firmware version, so administrators must obtain the corrected firmware build for the EKI-1242EIMS/EKI-1242IEIMS from Advantech's security advisory (https://advcloudfiles.advantech.com/cms/5dafee28-ad53-4d07-a328-7896fcc24b6e/Security%20Advisory%20PDF%20File/SECURITY-ADVISORY----EKI-1242IEIMS-updated-20260904.pdf) rather than assuming V1.06.01 or any inferred build is remediated. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Advantech EKI-1242EIMS and EKI-1242IEIMS devices running firmware V1.06.01, immediately block TCP port 5058 from untrusted networks at perimeter and internal firewalls, restrict management access to a dedicated isolated OT VLAN, and review logs for unauthorized connection attempts to port 5058. …
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External POC / Exploit Code
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