【Vulnerability Alert】Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS Contain a Critical Cybersecurity Vulnerability (CVE-2026-26084)

publish date : 2026-09-30 update date : 2026-10-02

Source: Ministry of education information & communication security contingency platform

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Publication Number TACERT-ANA-2026091401090505 Publication Time 2026-09-14 13:39:06
Incident Type ANA-Vulnerability Alert Discovery Time 2026-09-14 13:39:06
Impact Level Low  
[Subject]
【Vulnerability Alert】Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS Contain a Critical Cybersecurity Vulnerability (CVE-2026-26084)
[Content]

Forwarded from TWCERTCC Cybersecurity Alert TWCERTCC-200-202609-00000012

The web interfaces of Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS contain a Missing Access Control vulnerability (CVE-2026-26084, CVSS: 9.9), which allows an unauthenticated attacker to access sensitive information through specially crafted HTTP requests.

Information Sharing Level: WHITE (the intelligence content is information that may be publicly disclosed)
[Affected Platform]

FortiSandbox versions 5.0.0 to 5.0.5
FortiSandbox versions 4.4.0 to 4.4.8
FortiSandbox Cloud versions 5.0.4 to 5.0.5
FortiSandbox PaaS versions 5.0.4 to 5.0.5

[Recommended Actions]

Please update to the following versions:

FortiSandbox version 5.0.6 or later
FortiSandbox version 4.4.9 or later
FortiSandbox Cloud version 5.0.6 or later
FortiSandbox PaaS version 5.0.6 or later

[Reference]

https://www.twcert.org.tw/tw/cp-169-11194-d4015-1.html
(This notification is for informational purposes only and does not constitute a cybersecurity incident).
If you have questions or suggestions regarding this notification, please feel free to contact us.
Ministry of education information & communication security contingency platform
Website: https://info.cert.tanet.edu.tw/
Phone: +886-7-5250211
Internet Phone: 98400000
E-Mail: service@cert.tanet.edu.tw
Organizer: Computer Center