CVE-2023-3323

Code execution via writable project directory

Published Jul 24, 2023 · Updated Oct 18, 2024

Incorrect default permissions in ABB Ability zenon 11 builds through 106404 allow local users to execute code through altered projects. The default ACL on the Engineering Studio zenon_Projects workspace grants non-administrative users write access, letting them replace project content that the Service Engine loads. Exploitation requires low-privileged host access, obtained physically or through remote login, and execution occurs when the altered project is loaded.

CVSS severity5.9
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in ABB Ability zenon 11 builds through 106404 allow local users to execute code through altered projects. The default ACL on the Engineering Studio zenon_Projects workspace grants non-administrative users write access, letting them replace project content that the Service Engine loads. Exploitation requires low-privileged host access, obtained physically or through remote login, and execution occurs when the altered project is loaded.

The record

CVE
CVE-2023-3323
Published
Jul 24, 2023
Updated
Oct 18, 2024
Vendor
GENEREX SYSTEMS Computervertriebsgesellschaft mbH
Product
ABB Ability zenon
Classifications
CWE-276, T1574
Attack vector
physical
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=11 build <=11 build 106404

What conditions does exploitation require?

Attack vectorphysical
Required privilegesauthenticated

What is affected?

GENEREX SYSTEMS Computervertriebsgesellschaft mbH · ABB Ability zenonversion=11 build <=11 build 106404

Published CVSS scores

5.3Asea Brown Boveri Ltd. (ABB)CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H/E:P/RL:O/RC:C
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.9Asea Brown Boveri Ltd. (ABB)CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:L/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)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1574Hijack Execution Flow

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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