EUVD-2026-77228
GHSA-fh58-255m-v4qj
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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
Description states unauthenticated access; directory listing yields low confidentiality impact only, no integrity or availability consequence.
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
3DescriptionCVE.org
An exposure of information through directory listing issue exists in CONPROSYS M2M Gateway Series and CONPROSYS M2M Controller Series. Accessing a specific URL on this product may allow a remote unauthenticated attacker to obtain the directory list without authentication.
AnalysisAI
Directory listing exposure in Contec's CONPROSYS M2M Gateway and M2M Controller Series allows a remote attacker to enumerate server-side directory structures by accessing a specific URL on the device's web interface. The affected hardware includes both integrated and configurable variants of the CPS-MG341, CPS-MGS341, CPS-MC341, and CPS-MCS341 product lines. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Network-level access to the CONPROSYS device's web interface (HTTP/HTTPS port) is required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 reflects a medium-severity information disclosure with low confidentiality impact and no integrity or availability impact, which is consistent with a pure directory listing exposure. … 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 vendor-released patch or firmware update per Contec's security advisory at https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf and the JPCERT coordination notice at https://jvn.jp/en/vu/JVNVU96551518/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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OS command injection in CONPROSYS M2M Gateway and M2M Controller Series (CONTEC Co., Ltd.) allows an authenticated attac
Cross-site scripting in the embedded web management interface of Contec CONPROSYS M2M Gateway and Controller Series devi
Same technique Information Disclosure
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External POC / Exploit Code
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