CVE-2026-26084: Fortinet Unauthenticated Control of NAT Rules Leading to Exposure of Sensitive Information
This Fortinet advisory covers CVE-2026-26084 in FortiSandbox Cloud and FortiSandbox PaaS.
Key facts
- Vendor rating
- Critical, CVSS 9.9
- CISA KEV
- Not listed (catalogue checked )
- Affected
- FortiSandbox FortiSandbox: 4.4 through 5.2 (vendor-listed versions); FortiSandbox Cloud FortiSandbox Cloud: 4.4 through 5.0 (vendor-listed versions); FortiSandbox PaaS FortiSandbox PaaS: 5.0 through 5.2 (vendor-listed versions)
- Advisory id
- FG-IR-26-166
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
CVSSv3 Score:
9.9
An improper access control vulnerability [CWE-284] in FortiSandbox, FortiSandbox Cloud and FortiSandbox PaaS WEB UI may allow an unauthenticated attacker to access sensitive information via crafted HTTP requests.
Revised on 2026-09-08 00:00:00
Text from the source record.
- FortiSandbox FortiSandbox: 4.4 through 5.2 (vendor-listed versions)
- FortiSandbox Cloud FortiSandbox Cloud: 4.4 through 5.0 (vendor-listed versions)
- FortiSandbox PaaS FortiSandbox PaaS: 5.0 through 5.2 (vendor-listed versions)
Official advisory · high-confidence parse· fetched ·verify at source
CVE-2026-26084 in other vendors' advisories
- Fortinet: CVE-2026-26084, critical severity
More Fortinet advisories
CVE-2026-25089Jun 9, 2026Second-Order OS Command Injection via JSON Input on start vnc featureCVE-2026-26083May 12, 2026Incorrect global authorizationCVE-2026-106172Oct 13, 2026Fabric API Authentication bypassCVE-2026-107656Oct 13, 2026FortiSandbox PaaS improper access controlCVE-2026-39808Apr 14, 2026OS Command Injection through API endpointCVE-2026-27316Apr 14, 2026Credential disclosure in LDAP configuration web page.
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