PT-2026-25798 · Buffalo · Terastation Nas Ts5400R

Vulncheck · Published 2026-03-16 · Updated 2026-03-16 · CVE-2026-29516

NVD

CVSS v4.0

6.9

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2026-29516

Affected Products

Terastation Nas Ts5400R

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-29516 · Security Note
• https://vulncheck.com/advisories/buffalo-terastation-ts5400r-excessive-file-permissions-information-disclosure · Note
• https://buffaloamericas.com · Note