dataSIMS Avionics ARINC 664-1 - Local Buffer Overflow
Priority HIGH 65CWE-121Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00203 10th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Data Device Corporation | dataSIMS Avionics ARINC | 4.5.3 | — | No fix listed | CNA |
- dataSIMS Avionics ARINC VendorData Device Corporation Affected 4.5.3 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-47881
- 2026-10-03 Alias added: GHSA-f869-2w7m-q4p9
References
Exploit 1
Sources
- CVE-2021-47881 · CVE Program
- CVE-2021-47881 · NVD
- FIRST EPSS
- GHSA-f869-2w7m-q4p9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences