CVE-2026-78212

4MOSAn Security Technology｜4MOSAn Management Center - Arbitrary File Read

Published Aug 24, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Description

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.

Analysis

Technical impact

Unauthenticated remote attackers can trigger a relative path traversal flaw in 4MOSAn Management Center to download arbitrary system files. This demonstrates an arbitrary file read vulnerability, exposing sensitive configuration and data files without credentials and posing a confidentiality risk.

Affected Systems

The vulnerability impacts 4MOSAn Security Technology’s 4MOSAn Management Center. All releases prior to version 20260621 are vulnerable; upgrading to 20260621 or later and performing the FreeBSD-GCB Management Center security upgrade is required to remediate.

Risk and Exploitability

With a CVSS score of 8.7, the flaw carries high risk. EPSS information is not available and the vulnerability is not listed in the CISA KEV catalog, so widespread exploitation remains uncertain. Nonetheless, attackers can exploit the flaw over the network from any host that can reach the exposed Management Center, requiring no authentication and enabling read of any accessible file.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

4MOSAn Security Technology

4MOSAn Management Center

unaffected

Version	Status	Constraints
`0`	affected	< 20260621

No data.

Vendor Product Versions

4mosan Security Technology

4mosan Management Center

Version	Status	Scheme	Platform
`[0,20260621)`	affected	generic	—

Remediation

Vendor Solution

Upgrade to version 20260621 or later and perform the FreeBSD-GCB Management Center security upgrade

OpenCVE Recommended Actions

Upgrade to version 20260621 or later and apply the FreeBSD-GCB Management Center security upgrade.
Restrict external network access to the Management Center using firewall rules or VPN to limit exposure to trusted hosts.
Configure audit logging to capture and alert on file retrieval requests that resemble path‑traversal attempts.

Generated by OpenCVE AI on August 24, 2026 at 05:50 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.676% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://www.twcert.org.tw/en/cp-139-11123-79a92-2.html
https://www.twcert.org.tw/tw/cp-132-11119-25dfc-1.html

History

Aug 26, 2026 7:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Aug 24, 2026 9:30 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		4mosan Security Technology 4mosan Security Technology 4mosan Management Center
Vendors & Products		4mosan Security Technology 4mosan Security Technology 4mosan Management Center

Aug 24, 2026 4:00 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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.
Title		4MOSAn Security Technology｜4MOSAn Management Center - Arbitrary File Read
Weaknesses		CWE-23
References		https://www.twcert.org.tw/en/cp-139-11123-79a92-2.html https://www.twcert.org.tw/tw/cp-132-11119-25dfc-1.html
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}` cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}`