CVE-2021-47881

HIGH

dataSIMS Avionics ARINC 664-1 <4.5.3 - Buffer Overflow

Title source: llm

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.

Exploits (1)

exploitdb WORKING POC

by Kağan Çapar · pythonlocalwindows

https://www.exploit-db.com/exploits/49577

View Code ZIP pw:eip

References (4)

[Various Sources] https://www.ddc-web.com/

[Various Sources] https://www.ddc-web.com/en/connectivity/databus/milstd1553-1/software-1/bu-69414?partNumber=BU-69414

[Third Party Advisory] https://www.vulncheck.com/advisories/datasims-avionics-arinc-local-buffer-overflow

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/49577

Scores

CVSS v3 8.4

EPSS 0.0002

EPSS Percentile 5.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-121

Status published

Published Jan 23, 2026

Tracked Since Feb 18, 2026