CVE-2026-29516: Buffalo TeraStation TS5400R Excessive File Permissions Information Disclosure
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-29516?
CVE-2026-29516 has a medium severity rating due to its potential to allow unauthorized access to sensitive information.
How do I fix CVE-2026-29516?
To fix CVE-2026-29516, update the Buffalo TeraStation NAS TS5400R firmware to version 4.02-0.07 or later.
Who is affected by CVE-2026-29516?
CVE-2026-29516 affects users of the Buffalo TeraStation NAS TS5400R running firmware version 4.02-0.06 or earlier.
What kind of information can be disclosed due to CVE-2026-29516?
CVE-2026-29516 could allow authenticated attackers to read sensitive information from the /etc/shadow file.
Is CVE-2026-29516 a local or remote vulnerability?
CVE-2026-29516 is a local vulnerability that requires authenticated access to exploit.