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CVE-2025-58319 Delta Electronics CVE debrief

Delta Electronics CNCSoft-G2 versions 2.1.0.27 and earlier contain a file parsing vulnerability that allows arbitrary code execution when a user opens a malicious file. The flaw stems from improper validation of user-supplied files, enabling attackers to execute code within the context of the current process. This vulnerability was initially disclosed on April 30, 2024, and subsequently updated on October 16, 2025, to reflect modified affected products, vulnerability overview, and mitigations. The CVSS 3.1 score of 7.8 (HIGH) reflects local attack vector, low attack complexity, no privileges required, but user interaction required, with high impacts to confidentiality, integrity, and availability. Delta Electronics has released version 2.1.0.34 to address this vulnerability.

Vendor
Delta Electronics
Product
CNCSoft-G2
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2024-04-30
Original CVE updated
2025-10-16
Advisory published
2024-04-30
Advisory updated
2025-10-16

Who should care

Industrial control system operators, OT security teams, manufacturing security engineers, Delta Electronics system integrators, and organizations using CNCSoft-G2 for HMI/PLC programming in production environments.

Technical summary

CVE-2025-58319 is a file parsing vulnerability in Delta Electronics CNCSoft-G2 versions 2.1.0.27 and earlier. The software fails to properly validate user-supplied files, resulting in a stack-based buffer overflow condition. When a user opens a maliciously crafted file, an attacker can achieve arbitrary code execution in the context of the current process. This represents a significant risk in industrial environments where CNCSoft-G2 is used for programming Delta human-machine interfaces (HMIs) and programmable logic controllers (PLCs). The vulnerability requires local access and user interaction but grants high-impact capabilities including full confidentiality, integrity, and availability compromise of the engineering workstation. The attack surface is primarily through social engineering or supply chain compromise of project files exchanged between operators and integrators.

Defensive priority

HIGH

Recommended defensive actions

  • Update Delta Electronics CNCSoft-G2 to version 2.1.0.34 or later to remediate this vulnerability.
  • Review and apply ICS-CERT recommended practices for industrial control systems security.
  • Implement defense-in-depth strategies including network segmentation for OT environments.
  • Train operators to avoid opening untrusted files in engineering workstation environments.
  • Monitor for suspicious file activity in CNCSoft-G2 installations.

Evidence notes

CISA ICS Advisory ICSA-24-121-01 (Update A) documents this vulnerability in Delta Electronics CNCSoft-G2, with affected versions <=2.1.0.27. The advisory was initially published April 30, 2024, and updated October 16, 2025. CVSS 3.1 vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Vendor fix available in version 2.1.0.34.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-58319 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-58319

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

  • CVE-2025-58319 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-58319

    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/2024/icsa-24-121-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-121-01

    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://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ncas/tips/ST04-014

    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.