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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (9.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Data Device Corporation Datasims Avionics Arinc — versions 4.5.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/49577 (exploit)
- www.ddc-web.com/ (product)
- www.ddc-web.com/en/connectivity/databus/milstd1553-1/software-1/bu-69414 (product)
- www.vulncheck.com/advisories/datasims-avionics-arinc-local-buffer-overflow (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.