FORTINETVERIFIED
ZTNA Portal Improper Certificate Validation
Checked 7 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.
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SECURITY ADVISORYFORTINETVERIFIED
PUBLISHER UPDATE · FORTINET-PRODUCTS-858738FBE1ECCD2E
FORTINET-PRODUCTS-858738FBE1ECCD2E release notes and known issues
ZTNA Portal Improper Certificate Validation
Scope: Fortinet products. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.
Summary
CVSSv3 Score: 7.3 An improper certificate validation vulnerability [CWE-295] in FortiOS and FortiProxy Agentless ZTNA portal may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the ZTNA portal and the backend destination website. Revised on 2026-09-08 00:00:00
Improvements and security content
- CVSSv3 Score: 7.3 An improper certificate validation vulnerability [CWE-295] in FortiOS and FortiProxy Agentless ZTNA portal may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the ZTNA portal and the backend destination website. Revised on 2026-09-08 00:00:00
Known issues
Publisher statementNot stated. The verified publisher record does not contain a known-issues statement.
Affected products and versions
Products
- Fortinet products
Affected versions
- 7.3
Fixed versions or updates
- No fixed version is stated in this record.
Recommended action
Review the official publisher document before deployment.