CVE-2021-47881
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 4% of all known CVEs.
References
Related Vulnerabilities
Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-22457 | Critical | 9.0 | 100% | KEV + Ransom | Fix |
| CVE-2025-0282 | Critical | 9.0 | 100% | KEV + Ransom | - |
| CVE-2021-20038 | Critical | 9.8 | 100% | KEV + Ransom | - |
| CVE-2009-0927 | High | 8.8 | 97% | KEV | Fix |
| CVE-2020-10924 | High | 8.8 | 87% | - | - |
| CVE-2022-20705 | Critical | 10.0 | 80% | - | - |
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Markdown
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-26.