EUVD-2026-67293
GHSA-38f6-3gv7-32xr
Severity by source
CVSS:4.0/AV:N/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
Missing authentication on a network-reachable management function gives AV:N/AC:L/PR:N/UI:N, and enabling admin services compromises device confidentiality, integrity, and availability (C/I/A:H).
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
Lifecycle Timeline
6DescriptionCVE.org
Xiiaozet LK100W exposes a critical management function that can be invoked without authentication, allowing a remote attacker to enable administrative services that should be restricted. Successful exploitation may permit unauthorized access to the device.
AnalysisAI
Authentication bypass in the Xiiaozet LK100W device lets a remote attacker invoke a critical management function with no credentials, switching on administrative services that should stay restricted and opening a path to unauthorized device access. Tracked as CVE-2026-78239 and published in CISA ICS advisory ICSA-26-239-01, it carries a CVSS 4.0 base score of 9.3 (critical). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network reachability to the LK100W's management function/interface - no credentials, no user interaction, and no special client-side configuration (consistent with AV:N/AC:L/AT:N/PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | All available signals point to a high-priority issue. … 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 or fixed version is identified in the available data, so apply compensating network controls and consult CISA ICS advisory ICSA-26-239-01 (https://www.cisa.gov/news-events/ics-advisories/icsa-26-239-01) and its CSAF record (https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-239-01.json) for any vendor-supplied fix once released. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct immediate inventory of all Xiiaozet LK100W devices and assess network exposure; isolate or air-gap devices from untrusted networks where operationally feasible. …
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External POC / Exploit Code
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