EUVD-2026-77224
GHSA-p2hv-59cx-5f3p
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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
Network-accessible web UI, low-privilege attacker, victim interaction required, browser-scoped impact only (scope change, C:L/I:L).
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
3DescriptionCVE.org
Cross-site scripting vulnerability exists in Contec EC1000 series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.
AnalysisAI
Cross-site scripting in Contec's EC1000 series web interface allows a low-privileged authenticated attacker to inject arbitrary scripts that execute in the browser of another logged-in user. Affected models confirmed by JPCERT/CC include the ECE1000, ECE1020, and ECS1020. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker holds at least a low-privilege authenticated account on the targeted Contec EC1000 series web management interface (PR:L per CVSS 4.0 vector); (2) a separate logged-in user must actively interact with the page containing the injected script (UI:A - passive browsing to the injected resource). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 4.8 (Medium) correctly reflects the constrained real-world risk: exploitation requires the attacker to hold at least a low-privilege account on the device (PR:L), and a separate logged-in user must actively interact with the injected content (UI:A). … 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 | Consult the Contec vendor security advisory (https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_fl_26091000_en.pdf) for the patched firmware version - an exact fixed version is not independently confirmed from the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Remote code execution affects the Contec EC1000 series (ECE1000, ECE1020, ECS1020) industrial devices, where a classic b
Cross-site request forgery affects a broad range of Contec industrial data loggers, flow computers, and remote I/O coupl
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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