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Vulnerability record · CVE-2025-70083 · published 11 February 2026

CVE-2025-70083: Opensatkit stack-based buffer overflow vulnerability

OOpensatkit · Opensatkit

An issue was discovered in OpenSatKit 2.2.1. The DirName field in the telecommand is provided by the ground segment and must be treated as untrusted input. The program copies DirName into the local buffer DirWithSep using strcpy. The size of this buffer is OS_MAX_PATH_LEN. If the length of DirName is greater than or equal to OS_MAX_PATH_LEN, a stack buffer overflow occurs, overwriting adjacent stack memory. The path length check (FileUtil_AppendPathSep) is performed after the strcpy operation, meaning the validation occurs too late and cannot prevent the overflow.

7.8 CVSS 3.1 High EPSS 0.21% · top 90.3% CWE-121 · Stack-based buffer overflow
7.8CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in OpenSatKit 2.2.1. The DirName field in the telecommand is provided by the ground segment and must be treated as untrusted input. The program copies DirName into the local buffer DirWithSep using strcpy. The size of this buffer is OS_MAX_PATH_LEN. If the length of DirName is greater than or equal to OS_MAX_PATH_LEN, a stack buffer overflow occurs, overwriting adjacent stack memory. The path length check (FileUtil_AppendPathSep) is performed after the strcpy operation, meaning the validation occurs too late and cannot prevent the overflow.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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/dir.c Product
https://raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src/dir.c#:~:text=strcpy%28DirWithSe Product

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Source: NIST National Vulnerability Database (record CVE-2025-70083), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.