---
id: CVE-2026-78212
title: '4MOSAn developed by 4MOSAn Security Technology Co., Ltd'
summary: >-
  4MOSAn developed by 4MOSAn Security Technology Co., Ltd. has an Arbitrary File
  Read vulnerability. Unauthenticated remote attackers can exploit a Relative
  Path Traversal flaw to download arbitrary system files.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-23
published: '2026-08-24'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T16:10:00.220'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78212'
references:
  - url: 'https://www.twcert.org.tw/en/cp-139-11123-79a92-2.html'
    label: twcert@cert.org.tw
  - url: 'https://www.twcert.org.tw/tw/cp-132-11119-25dfc-1.html'
    label: twcert@cert.org.tw
tags:
  - nvd
epss: 0.00676
epssPercentile: 0.50894
ingestedAt: '2026-10-12T16:57:59.905Z'
---

## Overview

4MOSAn developed by 4MOSAn Security Technology Co., Ltd. has an Arbitrary File Read vulnerability. Unauthenticated remote attackers can exploit a Relative Path Traversal flaw to download arbitrary system files.

## Remediation

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