Advisory Details

This vulnerability allows remote atackers to execute arbitrary code on affected installations of Delta Industrial Automation DOPSoft. 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. 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.

https://us-cert.cisa.gov/ics/advisories/icsa-21-005-05 

• 2020-08-28 - Vulnerability reported to vendor
• 2021-01-14 - Coordinated public release of advisory