CVE-2021-47881: Data Device Corporation Datasims Avionics Arinc

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

dataSIMS Avionics ARINC 664-1 version 4.5.3 contains a local buffer overflow vulnerability that allows attackers to overwrite memory by manipulating the milstd1553result.txt file. Attackers can craft a malicious file with carefully constructed payload and alignment sections to potentially execute arbitrary code on the Windows system.

Affected products

• Data Device Corporation Datasims Avionics Arinc: version 4.5.3 only

Published 2026-01-23. Last modified 2026-06-17.