ZDI-21-030: Delta Industrial Automation CNCSoft-B DOPSoft XLS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation CNCSoft-B. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XLS files by the DOPSoft program. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Affected Software

1 affected component
Delta Industrial Automation CNCSoft-B

Event History

Mar 26, 2025
Advisory Published
via ZDI·12:52 AM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of ZDI-21-030?

The severity of ZDI-21-030 is high due to its potential for remote code execution by attackers.

2

How do I fix ZDI-21-030?

To fix ZDI-21-030, update the Delta Industrial Automation CNCSoft-B software to the latest version provided by the vendor.

3

What type of attack does ZDI-21-030 involve?

ZDI-21-030 involves remote code execution attacks requiring user interaction with a malicious page or file.

4

Which software is affected by ZDI-21-030?

The software affected by ZDI-21-030 is Delta Industrial Automation CNCSoft-B.

5

Is user interaction required to exploit ZDI-21-030?

Yes, user interaction is required for exploiting ZDI-21-030, as the target must visit a malicious page or open a malicious file.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203