CVE-2026-29516

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.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://buffaloamericas.com/
https://www.vulncheck.com/advisories/buffalo-terastation-ts5400r-excessive-file-permissions-information-disclosure

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-16 20:16

Updated : 2026-03-17 16:16

NVD link : CVE-2026-29516

Mitre link : CVE-2026-29516

CVE.ORG link : CVE-2026-29516

JSON object : View

Products Affected

No product.

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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