CVE-2021-47881

HIGH

dataSIMS Avionics ARINC 664-1 <4.5.3 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47881. PoCs published by Kağan Çapar.

AI-analyzed exploit summary This exploit demonstrates a local buffer overflow in dataSIMS Avionics ARINC 664-1 software (v4.5.3) by overwriting the EIP register with a controlled value and executing a tight loop payload generated via msfvenom. The PoC writes a maliciously crafted file to trigger the vulnerability.

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

This exploit demonstrates a local buffer overflow in dataSIMS Avionics ARINC 664-1 software (v4.5.3) by overwriting the EIP register with a controlled value and executing a tight loop payload generated via msfvenom. The PoC writes a maliciously crafted file to trigger the vulnerability.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: dataSIMS Avionics ARINC 664-1 v4.5.3
No auth needed
Prerequisites: Local access to the target system · dataSIMS software installed and running
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4

Scores

CVSS v3 8.4
EPSS 0.0015
EPSS Percentile 4.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Published Jan 23, 2026
Tracked Since Feb 18, 2026