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CVE-2026-29516 (GCVE-0-2026-29516)

Vulnerability from cvelistv5 – Published: 2026-03-16 19:07 – Updated: 2026-05-11 23:11 Unsupported When Assigned
VLAI
Title
Buffalo TeraStation TS5400R Excessive File Permissions Information Disclosure
Summary
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.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-16 20:08 UTC
CWE
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
Impacted products
Vendor Product Version CPE status
Buffalo TeraStation NAS TS5400R Affected: 0 , ≤ 4.02-0.06 (custom)
guessed Create a notification for this product.
Credits
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp Omar Crespo, Pentester, GM Sectec, Corp. VulnCheck
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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