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PatchSiren cyber security CVE debrief

CVE-2025-3394 ABB CVE debrief

CVE-2025-3394 is a high-severity issue in ABB Automation Builder project handling. CISA says the product stores user management information in the project file; although password data is fully encrypted, a specially crafted project file can cause user management to be overruled. For organizations that exchange, store, or archive Automation Builder projects, this is primarily an integrity and access-control concern.

Vendor
ABB
Product
Automation Builder
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-04-30
Original CVE updated
2026-05-21
Advisory published
2025-04-30
Advisory updated
2026-05-21

Who should care

ABB Automation Builder users and administrators, OT/ICS engineering teams, system integrators, and anyone who distributes, imports, or stores Automation Builder project files.

Technical summary

The CISA CSAF advisory for ABB Automation Builder (ICSA-25-133-04) describes a project-file tampering issue affecting ABB Automation Builder: vers:all/*. The source states that user management information is stored in the project file and that crafted contents may overrule user management, even though password data is encrypted. The advisory assigns CVSS 3.1 vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating a locally reachable, low-complexity issue with potentially severe confidentiality, integrity, and availability impact as recorded by the advisory.

Defensive priority

High priority: protect Automation Builder project files from unauthorized modification and apply ABB’s recommended security settings.

Recommended defensive actions

  • In Automation Builder project settings, set Security to "Integrity" check.
  • In Automation Builder project settings, set Security to "Encryption."
  • Restrict write access to project files and only import project files from trusted sources.
  • Review internal handling of Automation Builder project files for unauthorized changes before deployment or transfer.
  • Follow CISA ICS recommended practices for hardening and defense in depth in OT environments.

Evidence notes

This debrief is based on the supplied CISA CSAF advisory JSON for ICSA-25-133-04, published and modified on 2025-05-13T06:00:00Z. The advisory identifies ABB as the vendor, Automation Builder as the affected product, and lists one affected product entry (ABB Automation Builder: vers:all/*). The remediation text in the source specifically recommends setting project Security to "Integrity" check or "Encryption." No KEV entry was supplied for this CVE.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-3394 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-3394

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-3394 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-3394

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-133-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-133-04

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.