CVE-2025-70085

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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

Configuration 1 (hide)

cpe:2.3:a:opensatkit:opensatkit:2.2.1:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-11 18:16

Updated : 2026-06-17 10:03

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

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