VULNERABILITY INTELLIGENCE
CVE-2021-47881
CVSS score8.4 HIGH
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-01-23
Last modified2026-06-17
Description
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.