Login Request a demo
Critical severity · published Oct 26, 2026
CVE-2026-107656
An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9, FortiSandbox 4.2 all…
New
9.8
CVSS
0.9%
EPSS
No
On KEV
Description
An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.6, FortiSandbox PaaS 4.4 all versions, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via crafted HTTP requests
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiSandbox · Fortinet
5.0.0 through 5.0.6; 4.4.0 through 4.4.9; 4.2.1 through 4.2.8 · source: vendor
FP
FortiSandbox PaaS · Fortinet
5.0.0 through 5.0.6; 4.4.0 through 4.4.9; 4.2.1 through 4.2.8 · source: vendor
Affected product
FO
FortiSandbox
Fortinet
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107656
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107656
fortiguard.fortinet.com
https://fortiguard.fortinet.com/psirt/FG-IR-26-185
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