CVE-2026-82775Network attack vector

Unauthenticated directory listing via crafted URL

Published Sep 14, 2026 · Updated Sep 14, 2026

Directory listing exposure in CONTEC CONPROSYS M2M products before 4.1.0 allows remote attackers to retrieve directory contents. The web interface serves a directory index when a specific crafted URL is requested, but CONTEC has not disclosed the affected path or handler. No authentication or user interaction is required, and the documented consequence is limited to names exposed by the directory listing.

CVSS severity5.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Directory listing exposure in CONTEC CONPROSYS M2M products before 4.1.0 allows remote attackers to retrieve directory contents. The web interface serves a directory index when a specific crafted URL is requested, but CONTEC has not disclosed the affected path or handler. No authentication or user interaction is required, and the documented consequence is limited to names exposed by the directory listing.

The record

CVE
CVE-2026-82775
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
CONTEC Co., Ltd.
Product
CONPROSYS M2M Controller CPS-MC341
Classifications
CWE-548, T1083
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CONTEC Co., Ltd. · CONPROSYS M2M Controller CPS-MC341version=0 <4.1.0
CONTEC Co., Ltd. · CONPROSYS M2M Gateway CPS-MG341version=0 <4.1.0
CONTEC Co., Ltd. · CONPROSYS M2M Controller CPS-MCS341version=0 <4.1.0
CONTEC Co., Ltd. · CONPROSYS M2M Gateway CPS-MGS341version=0 <4.1.0

Published CVSS scores

5.3JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-548Exposure of Information Through Directory Listing
T1083File and Directory Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo