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VulnerabilityPublished

CVE-2025-61886: Fortinet FortiSandbox PaaS · Execute Unauthorized Code or Commands

Affects Fortinet FortiSandbox PaaSSource CVE Database V5

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Public exploit available · CVSS 4.9 Medium · patch available : patch Fortinet FortiSandbox PaaS as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
FortinetFortiSandbox PaaSAffected
  • >=5.0.0 <=5.0.4
Fixed in–
FortinetFortiSandboxAffected
  • >=5.0.0 <=5.0.4
Fixed in–

CPE configurations (10)

  • cpe:2.3:a:fortinet:fortisandboxpaas:5.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortisandboxpaas:5.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortisandboxpaas:5.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortisandboxpaas:5.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortisandboxpaas:5.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortisandbox:5.0.4:*:*:*:*:*:*:*

AI-suggested

An official fix is available from Fortinet to remediate this vulnerability. Users should apply the vendor-provided patch to affected versions 5.0.0 through 5.0.4 of FortiSandbox and FortiSandbox PaaS. Since this is not a cloud service, remediation requires updating the affected software installations. No additional mitigation steps are indicated by the vendor advisory.

Description

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.4, FortiSandbox PaaS 5.0.0 through 5.0.4 may allow an attacker to perform an XSS attack via crafted HTTP requests.

References

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