Buffer overflow in Data Device Corporation Datasims Avionics Arinc
CVE-2021-47881
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.
Vulnerability class: Buffer Overflow
EPSS: 0.001 (4.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Data Device Corporation Datasims Avionics Arinc — versions 4.5.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47881?
- CVE-2021-47881 is a high-severity vulnerability in Data Device Corporation Datasims Avionics Arinc, classified under Stack-based Buffer Overflow. CVSS score: 8.4/10. Published 2026-01-23.
- How severe is CVE-2021-47881?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2021-47881 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.