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CVE-2026-29516

Buffalo TeraStation TS5400R Excessive File Permissions Information Disclosure

Published: Mar 16, 2026Updated: May 14, 2026 Sources: CVE List NVDCWE-732
NVD MITRE
4.9CVSSMEDIUM
EPSS Score
0.5%
Top 60.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-732

Affected Products

TeraStation NAS TS5400RBuffaloNetworking Infrastructure
terastation nas ts5400r firmwarebuffaloamericas
Embedded
Hardware Firmware / storage-nas
buffalocommercialTWNetworking Infrastructureaka wzr-600dhp firmware, wzr-1750dhp2 firmware, wzr-900dhp firmware
buffaloamericascommercialUSHardware Firmware

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

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

Timeline

Published
Mar 16, 2026
Last Updated
May 14, 2026

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