CVE-2023-29155Network attack vector

Unauthenticated root access via missing account authentication

Published Nov 20, 2023 · Updated Jun 11, 2025

Improper authentication in INEA RTU firmware 3.36b and earlier allows remote attackers to obtain root access over the network. The device host accepts access to the root account without requiring authentication, exposing administrator-level control. No credentials or user interaction are required, and successful access grants control of the device host.

CVSS severity9.8
Critical
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in INEA RTU firmware 3.36b and earlier allows remote attackers to obtain root access over the network. The device host accepts access to the root account without requiring authentication, exposing administrator-level control. No credentials or user interaction are required, and successful access grants control of the device host.

The record

CVE
CVE-2023-29155
Published
Nov 20, 2023
Updated
Jun 11, 2025
Vendor
INEA
Product
ME-RTU
Classifications
CWE-287, CWE-306, T0819
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=3.36b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

INEA · ME-RTUversion=0 <=3.36b
INEA · ME RTU Firmwareversion=0 <=3.36b

Published CVSS scores

9.8CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function
T0819Exploit Public-Facing Application

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

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Your stack

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