CVE-2025-25255
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-14

Last updated on: 2025-12-09

Assigner: Fortinet, Inc.

Description
An Improperly Implemented Security Check for Standard vulnerability [CWE-358] in Fortinet FortiOS 7.6.0 through 7.6.3, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.11, FortiProxy 7.2 all versions, FortiProxy 7.0.1 through 7.0.22 may allow an unauthenticated proxy user to bypass the domain fronting protection feature via crafted HTTP requests.
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Meta Information
Published
2025-10-14
Last Modified
2025-12-09
Generated
2026-06-16
AI Q&A
2025-10-14
EPSS Evaluated
2026-06-15
NVD
CVE-2025-25255
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
fortinet fortios From 7.4.0 (inc) to 7.4.9 (inc)
fortinet fortiproxy From 7.6.0 (inc) to 7.6.4 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-358 The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.
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Executive Summary

This vulnerability is an improperly implemented security check in FortiProxy and FortiOS versions specified, which allows an authenticated proxy user to bypass the domain fronting protection feature by sending specially crafted HTTP requests.

Impact Analysis

An attacker who is an authenticated proxy user could bypass domain fronting protections, potentially allowing them to access or route traffic in ways that are normally blocked, which could lead to unauthorized access or data exposure.

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