---
id: CVE-2026-67673
title: >-
  A stack-based buffer overflow vulnerability exists in the cmd_edl function of
  OreSat Firmware v1.0
summary: >-
  A stack-based buffer overflow vulnerability exists in the cmd_edl function of
  OreSat Firmware v1.0. The vulnerability is triggered when processing the edl
  fw_flash command, where the <filename> argument is copied to a 64-byte stack
  buffe…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-121
published: '2026-08-03'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:04:24.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67673'
references:
  - url: 'https://github.com/dazuo233/cve/issues/2'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00152
epssPercentile: 0.04716
ingestedAt: '2026-09-09T16:14:05.511Z'
---

## Overview

A stack-based buffer overflow vulnerability exists in the cmd_edl function of OreSat Firmware v1.0. The vulnerability is triggered when processing the edl fw_flash command, where the <filename> argument is copied to a 64-byte stack buffer via memcpy without proper length validation. An attacker with physical access to the UART3 serial interface can exploit this vulnerability by sending a maliciously crafted command with an oversized filename parameter,

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.