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
| Link | Resource |
|---|---|
| https://gist.github.com/jonafk555 | Third Party Advisory |
| https://github.com/OpenSatKit/OpenSatKit | Product |
| https://github.com/OpenSatKit/OpenSatKit/releases/tag/v2.2.1 | Release Notes |
| https://raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src/file.c | Third Party Advisory |
Configurations
History
17 Feb 2026, 15:02
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:opensatkit:opensatkit:2.2.1:*:*:*:*:*:*:* | |
| First Time |
Opensatkit opensatkit
Opensatkit |
|
| References | () https://gist.github.com/jonafk555 - Third Party Advisory | |
| References | () https://github.com/OpenSatKit/OpenSatKit - Product | |
| References | () https://github.com/OpenSatKit/OpenSatKit/releases/tag/v2.2.1 - Release Notes | |
| References | () https://raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src/file.c - Third Party Advisory |
12 Feb 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.8 |
| CWE | CWE-121 |
11 Feb 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-02-11 18:16
Updated : 2026-02-17 15:02
NVD link : CVE-2025-70085
Mitre link : CVE-2025-70085
CVE.ORG link : CVE-2025-70085
JSON object : View
Products Affected
opensatkit
- opensatkit
CWE
CWE-121
Stack-based Buffer Overflow
