CVE-2023-2443Network attack vector

API traffic decryption via negotiated 3DES

Published May 11, 2023 · Updated Jan 24, 2025

Inadequate encryption in Rockwell Automation ThinManager 13.0.0 and 13.0.1 allows remote attackers to decrypt client-server API traffic. The API accepts client-requested 3DES, a medium-strength cipher, instead of enforcing stronger encryption for the session. Exploitation requires network access and a client connection that negotiates the insecure cipher; the reported consequence is traffic disclosure only.

CVSS severity7.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption in Rockwell Automation ThinManager 13.0.0 and 13.0.1 allows remote attackers to decrypt client-server API traffic. The API accepts client-requested 3DES, a medium-strength cipher, instead of enforcing stronger encryption for the session. Exploitation requires network access and a client connection that negotiates the insecure cipher; the reported consequence is traffic disclosure only.

The record

CVE
CVE-2023-2443
Published
May 11, 2023
Updated
Jan 24, 2025
Vendor
Rockwell Automation
Product
ThinManager
Classifications
CWE-326, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 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=<=13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · ThinManagerversion=<=13.0

Published CVSS scores

7.5Rockwell AutomationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 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-326Inadequate Encryption Strength
T1040Network Sniffing

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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