An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any length checking and without using bounded format specifiers such as %.*s. If the filename length approaches OS_MAX_PATH_LEN (commonly 64-256 bytes), the combined formatted string together with constant text can exceed 256 bytes, resulting in a stack buffer overflow. Such unsafe sprintf calls are scattered across multiple functions in file.c, including FILE_ConcatenateCmd() and ConcatenateFiles(), all of which fail to validate the output length.
History

Thu, 12 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-121
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 12 Feb 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Opensatkit
Opensatkit opensatkit
Vendors & Products Opensatkit
Opensatkit opensatkit

Wed, 11 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Description An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any length checking and without using bounded format specifiers such as %.*s. If the filename length approaches OS_MAX_PATH_LEN (commonly 64-256 bytes), the combined formatted string together with constant text can exceed 256 bytes, resulting in a stack buffer overflow. Such unsafe sprintf calls are scattered across multiple functions in file.c, including FILE_ConcatenateCmd() and ConcatenateFiles(), all of which fail to validate the output length.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-02-11T00:00:00.000Z

Updated: 2026-02-12T15:02:00.414Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70085

cve-icon Vulnrichment

Updated: 2026-02-12T15:01:55.403Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-11T18:16:06.600

Modified: 2026-02-12T16:16:05.753

Link: CVE-2025-70085

cve-icon Redhat

No data.