{"id":"CVE-2021-47881","aliases":["EUVD-2026-4288","GHSA-f869-2w7m-q4p9"],"status":"published","title":"dataSIMS Avionics ARINC 664-1 - Local Buffer Overflow","description":"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.","severity":{"version":"4.0","score":6.7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00203,"percentile":0.10386,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-121"],"published":"2026-01-23T16:47:34Z","modified":"2026-06-17T04:18:41Z","exploits":[{"source":"pocgithub","id":"kagancapar/CVE-2021-47881","title":"kagancapar/CVE-2021-47881","date":"2026-08-10","url":"https://github.com/kagancapar/CVE-2021-47881"}],"products":[{"vendor":"data device corporation","product":"datasims avionics arinc"}],"references":[{"url":"https://www.exploit-db.com/exploits/49577","tags":["exploit"]},{"url":"https://www.ddc-web.com/","tags":["product"]},{"url":"https://www.ddc-web.com/en/connectivity/databus/milstd1553-1/software-1/bu-69414?partNumber=BU-69414","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/datasims-avionics-arinc-local-buffer-overflow","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47881"},{"url":"https://www.ddc-web.com"},{"url":"https://github.com/advisories/GHSA-f869-2w7m-q4p9"}],"sources":{"cve":[{"id":"CVE-2021-47881","title":"dataSIMS Avionics ARINC 664-1 - Local Buffer Overflow","description":"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.","status":"published","published":"2026-01-23T16:47:34.119Z","modified":"2026-01-23T19:25:15.289Z","cvss":[{"version":"4.0","score":6.7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:32:56.308189Z"}],"euvd":[{"id":"EUVD-2026-4288","description":"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.","status":"published","published":"2026-01-23T16:47:34Z","modified":"2026-01-23T19:25:15Z","cvss":[{"version":"4.0","score":6.7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:48:48.084617Z"}],"ghsa":[{"id":"GHSA-f869-2w7m-q4p9","title":"dataSIMS Avionics ARINC 664-1 version 4.5.3 contains a local buffer overflow vulnerability that...","description":"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.","status":"published","published":"2026-01-23T18:31:29Z","modified":"2026-01-23T18:31:29Z","cvss":[{"version":"4.0","score":6.7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:05:53.055975Z"}],"nvd":[{"id":"CVE-2021-47881","description":"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.","status":"published","published":"2026-01-23T17:15:51.717Z","modified":"2026-06-17T04:18:41.15Z","cvss":[{"version":"4.0","score":6.7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}