Buffer overflow in Opensatkit
CVE-2025-70083
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (10.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Opensatkit — versions 2.2.1
Weakness classification (CWE)
References
- github.com/OpenSatKit/OpenSatKit (Product)
- github.com/OpenSatKit/OpenSatKit/releases/tag/v2.2.1 (Release Notes)
- raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src… (Product)
- raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src… (Product)
- gist.github.com/jonafk555 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-70083?
- CVE-2025-70083 is a high-severity vulnerability in Opensatkit, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-02-11.
- How severe is CVE-2025-70083?
- High severity. CVSS v3 base score is 7.8 out of 10.