PT-2026-4503 · Microsoft+1 · Windows+1

Kağan Çapar · Published 2026-01-23 · Updated 2026-01-24 · CVE-2021-47881

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions dataSIMS Avionics ARINC 664-1 version 4.5.3

Description The software contains a local buffer overflow that allows attackers to overwrite memory. This is achieved by manipulating the milstd1553result.txt file. An attacker can create a malicious file with a crafted payload and alignment sections to potentially execute arbitrary code on a Windows system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2021-47881

Affected Products

Windows

Datasims Avionics

References · 7

• 🔥 https://exploit-db.com/exploits/49577 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47881 · Security Note
• https://vulncheck.com/advisories/datasims-avionics-arinc-local-buffer-overflow · Note
• https://ddc-web.com/en/connectivity/databus/milstd1553-1/software-1/bu-69414?partNumber=BU-69414 · Note
• https://twitter.com/CVEnew/status/2014995844198748416 · Twitter Post
• https://t.me/CVEtracker/42851 · Telegram Post
• https://ddc-web.com · Note