CVE-2024-0323Network attack vector

FTP traffic interception via obsolete TLS protocols

Published Feb 5, 2024 · Updated Sep 6, 2024

Risky cryptography in B&R Automation Runtime 14.0 through 14.92 allows remote attackers to decrypt or intercept FTP communications. Its FTP server negotiates obsolete SSLv3, TLS 1.0, and TLS 1.1 instead of excluding those protocols from client sessions. Unauthenticated network access to an affected system node is required, enabling interception or decryption of traffic between clients and the runtime.

CVSS severity9.8
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Risky cryptography in B&R Automation Runtime 14.0 through 14.92 allows remote attackers to decrypt or intercept FTP communications. Its FTP server negotiates obsolete SSLv3, TLS 1.0, and TLS 1.1 instead of excluding those protocols from client sessions. Unauthenticated network access to an affected system node is required, enabling interception or decryption of traffic between clients and the runtime.

The record

CVE
CVE-2024-0323
Published
Feb 5, 2024
Updated
Sep 6, 2024
Vendor
B&R Industrial Automation
Product
Automation Runtime
Classifications
CWE-1240, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 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=14.0 <14.93

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

B&R Industrial Automation · Automation Runtimeversion=14.0 <14.93

Published CVSS scores

9.1B&R Industrial AutomationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
9.8Asea Brown Boveri Ltd. (ABB)CVSS: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-1240Use of a Cryptographic Primitive with a Risky Implementation
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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