CVE-2023-34412Network attack vector

Browser script execution via stored diagnosis payload

Published Aug 17, 2023 · Updated Aug 2, 2024

Stored XSS in mbNET, mbNET.rokey, REX 200, and REX 250 before 7.3.2 allows remote authenticated users to run script in a browser. The diagnosis page stores an arbitrary JavaScript payload and executes it whenever the page loads immediately after device login. High-privilege access is required to plant the payload, and a later page view can expose or alter browser data and reduce browser performance.

CVSS severity4.8
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in mbNET, mbNET.rokey, REX 200, and REX 250 before 7.3.2 allows remote authenticated users to run script in a browser. The diagnosis page stores an arbitrary JavaScript payload and executes it whenever the page loads immediately after device login. High-privilege access is required to plant the payload, and a later page view can expose or alter browser data and reduce browser performance.

The record

CVE
CVE-2023-34412
Published
Aug 17, 2023
Updated
Aug 2, 2024
Vendor
MB connect line
Product
mbNET.rokey
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <7.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MB connect line · mbNET.rokeyversion=0 <7.3.2
Helmholz GmbH & Co. KG · REX 250version=0 <7.3.2
MB connect line · mbNETversion=0 <7.3.2
Helmholz GmbH & Co. KG · REX 200version=0 <7.3.2

Published CVSS scores

4.8CERT VDECVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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