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CVE-2026-107656VulnerabilityPublished

An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through

Source GCVE Database

0
Authoritative record:CVE-2026-107656· Critical 9.6

Public exploit available · CVSS 9.6 Critical · patch available : patch FortiSandbox as a priority.

Data as of 26 Oct 2026, 16:49 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
FortinetFortiSandboxAffected
  • >=5.0.0 <=5.0.6
  • >=4.4.0 <=4.4.9
  • >=4.2.1 <=4.2.8
Fixed in–
FortinetFortiSandbox PaaSAffected
  • >=5.0.0 <=5.0.6
  • >=4.4.0 <=4.4.9
  • >=4.2.1 <=4.2.8
Fixed in–
Fortinetfortinet/fortisandboxpkg:rpm/fortinet/fortisandboxOther threatsAffected
  • <=5.0.6 >=5.0.0
  • <=4.4.9 >=4.4.0
  • <=4.2.8 >=4.2.1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, consider restricting network access to FortiSandbox management interfaces and implementing compensating controls to limit exposure to crafted HTTP requests.

Description

CVE-2026-107656 is a critical authentication bypass vulnerability affecting multiple versions of Fortinet FortiSandbox and FortiSandbox PaaS. The flaw allows an attacker to execute unauthorized code or commands by sending specially crafted HTTP requests. The affected versions include FortiSandbox 5.0.0 through 5.0.6, 4.4.0 through 4.4.9, all versions of 4.2, and corresponding FortiSandbox PaaS versions. The vulnerability has a high CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability.

References

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