CVE-2025-25255: fortiproxy from 7.0.1 (inclusive), before 7.6.4 (exclusive); +3 more affected products

Affected technology

fortiproxy · from 7.0.1 (inclusive), before 7.6.4 (exclusive)
fortinet

fortios · from 7.6.0 (inclusive), before 7.6.4 (exclusive)
fortinet

FortiOS · 7.6.0 through 7.6.3
Fortinet

FortiProxy · 7.6.0 through 7.6.3, 7.4.0 through 7.4.11, 7.2.0 through 7.2.15, 7.0.1 through 7.0.22
Fortinet

Description’s affected range: through 7.6.3

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An unauthenticated proxy user may bypass the domain fronting protection feature via crafted HTTP requests. Vendor/CNA’s CVSS 3.1 assessment (base score 5.3/10) rates confidentiality and availability impact as none; integrity impact as low. NVD’s CVSS 3.1 assessment (base score 4.3/10) rates confidentiality and availability impact as none; integrity impact as low. Source advisory’s CVSS 3.1 assessment (base score 4.3/10) rates confidentiality and availability impact as none; integrity impact as low.