EUVD-2026-77225
GHSA-jwm7-mwjg-xm2g
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Network-reachable web service (AV:N), low complexity (AC:L), low privilege required (PR:L per CVSS 4.0 source), no scope change, full RCE impact.
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
4DescriptionCVE.org
Buffer overflow vulnerability exists in Contec EC1000 series. If a remote attacker sends a specially crafted request to the product's web service, an arbitrary program may be executed.
AnalysisAI
Remote code execution affects the Contec EC1000 series (ECE1000, ECE1020, ECS1020) industrial devices, where a classic buffer overflow in the embedded web service allows a network-authenticated attacker to send a specially crafted HTTP request and execute arbitrary programs on the device. Reported by JPCERT/CC via JVN advisory JVNVU99009004, this is an embedded industrial controller flaw with full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have network access to the device's web service (AV:N) and hold at least low-privilege credentials on the device (PR:L per CVSS 4.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 reflects a high-severity vulnerability: network-reachable (AV:N), low complexity (AC:L), no attack requirements (AT:N), but requiring some level of authentication (PR:L). … 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 | Apply the firmware update or mitigation guidance published by Contec in their security advisory (https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_fl_26091000_en.pdf) and the JVN advisory JVNVU99009004 (https://jvn.jp/en/vu/JVNVU99009004/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an asset inventory to identify all Contec EC1000 series devices and determine which have network accessibility or remote access enabled. …
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Cross-site request forgery affects a broad range of Contec industrial data loggers, flow computers, and remote I/O coupl
Cross-site scripting in Contec's EC1000 series web interface allows a low-privileged authenticated attacker to inject ar
Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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