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.
Published:Mar 16, 2026
Last Modified:May 14, 2026
EPS:Mar 16, 2026
EPSS Score:0.0001
CVSS Score:4.9
Affected Products
Vendor
Product
Action
Vendor
Buffalo
Product
Terastation Nas Ts5400r
Buffalo
Terastation Nas Ts5400r
Vendor
Buffaloamericas
Product
Terastation Nas Ts5400r
Buffaloamericas
Terastation Nas Ts5400r
Vendor
Buffaloamericas
Product
Terastation Nas Ts5400r Firmware
Buffaloamericas
Terastation Nas Ts5400r Firmware
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
