Buffalo TeraStation NAS TS5400R firmware version 4.02-0.06 and prior contain an excessive file permissions vulnerability that allows authenticated attackers to read the /etc/shadow file by uploading and executing a PHP file through the webserver. Attackers can exploit world-readable permissions on /etc/shadow to retrieve hashed passwords for all configured accounts including root.

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Fixes

Solution

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Workaround

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History

Tue, 17 Mar 2026 15:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}


Tue, 17 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Buffalo
Buffalo terastation Nas Ts5400r
Vendors & Products Buffalo
Buffalo terastation Nas Ts5400r

Mon, 16 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 16 Mar 2026 19:30:00 +0000

Type Values Removed Values Added
Description Buffalo TeraStation NAS TS5400R firmware version 4.02-0.06 and prior contain an excessive file permissions vulnerability that allows authenticated attackers to read the /etc/shadow file by uploading and executing a PHP file through the webserver. Attackers can exploit world-readable permissions on /etc/shadow to retrieve hashed passwords for all configured accounts including root.
Title Buffalo TeraStation TS5400R Excessive File Permissions Information Disclosure
Weaknesses CWE-732
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-17T15:28:01.152Z

Reserved: 2026-03-04T15:39:26.872Z

Link: CVE-2026-29516

cve-icon Vulnrichment

Updated: 2026-03-16T20:08:33.673Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-16T20:16:18.113

Modified: 2026-03-17T16:16:21.760

Link: CVE-2026-29516

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-17T09:52:15Z

Weaknesses