CVE-2021-47881

HIGH
2026-01-23 [email protected]
8.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 26, 2026 - 15:03 vuln.today
Public exploit code
CVE Published
Jan 23, 2026 - 17:15 nvd
HIGH 8.4

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.

Analysis

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. [CVSS 8.4 HIGH]

Technical Context

Classified as CWE-121 (Stack-based Buffer Overflow). 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.

Affected Products

dataSIMS Avionics ARINC 664-1 version 4.5.3 contains a local buffer overflow vulnerability that allows attackers to overwrite memory by manipulating t

Remediation

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.

Priority Score

62
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +42
POC: +20

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CVE-2021-47881 vulnerability details – vuln.today

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