CVE-2023-34441

Authentication-secret theft via cleartext TDI requests

Published Oct 18, 2023 · Updated Sep 11, 2024

Cleartext transmission in Bently Nevada 3500 System TDI firmware 5.05 allows attackers to capture and reuse an authentication secret. The /22 TDI module's clear-text proprietary Ethernet protocol places the same secret key in every authenticated request without binding it to a session. Network access to captured device traffic, through a man-in-the-middle position or verbose inspection traces, enables arbitrary authenticated requests indefinitely.

CVSS severity6.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Bently Nevada 3500 System TDI firmware 5.05 allows attackers to capture and reuse an authentication secret. The /22 TDI module's clear-text proprietary Ethernet protocol places the same secret key in every authenticated request without binding it to a session. Network access to captured device traffic, through a man-in-the-middle position or verbose inspection traces, enables arbitrary authenticated requests indefinitely.

The record

CVE
CVE-2023-34441
Published
Oct 18, 2023
Updated
Sep 11, 2024
Vendor
Bently Nevada
Product
Bently Nevada 3500 System
Classifications
CWE-319, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 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=5.05

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Bently Nevada · Bently Nevada 3500 Systemversion=5.05

Published CVSS scores

6.8ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

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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