CVE-2025-31366: Improper access control in Fortinet FortiSASE
An Improper Neutralization of Input During Web Page Generation vulnerability [CWE-79] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSASE 25.2.a may allow an unauthenticated attacker to perform a reflected cross site scripting (XSS) via crafted HTTP requests.
AI Analysis
Technical Summary
This vulnerability in Fortinet FortiSASE 25.2.a involves improper input neutralization during web page generation, classified as CWE-79. It enables reflected XSS attacks through crafted HTTP requests by unauthenticated attackers. The CVSS 3.1 vector indicates network attack vector, high attack complexity, no privileges required, user interaction required, scope changed, and partial confidentiality and integrity impact. Fortinet has released an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an unauthenticated attacker to execute reflected cross-site scripting attacks, potentially leading to partial confidentiality and integrity impacts. This may result in the execution of arbitrary scripts in the context of the affected web application, but no availability impact is indicated.
Mitigation Recommendations
An official fix is available from Fortinet for this vulnerability. Users should apply the provided patch to FortiSASE version 25.2.a to remediate the issue. Since the remediation level is official-fix, applying the vendor's update is the recommended action.
CVE-2025-31366: Improper access control in Fortinet FortiSASE
Description
An Improper Neutralization of Input During Web Page Generation vulnerability [CWE-79] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSASE 25.2.a may allow an unauthenticated attacker to perform a reflected cross site scripting (XSS) via crafted HTTP requests.
CVSS v3.1
Score 4.5medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Fortinet FortiSASE 25.2.a involves improper input neutralization during web page generation, classified as CWE-79. It enables reflected XSS attacks through crafted HTTP requests by unauthenticated attackers. The CVSS 3.1 vector indicates network attack vector, high attack complexity, no privileges required, user interaction required, scope changed, and partial confidentiality and integrity impact. Fortinet has released an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an unauthenticated attacker to execute reflected cross-site scripting attacks, potentially leading to partial confidentiality and integrity impacts. This may result in the execution of arbitrary scripts in the context of the affected web application, but no availability impact is indicated.
Mitigation Recommendations
An official fix is available from Fortinet for this vulnerability. Users should apply the provided patch to FortiSASE version 25.2.a to remediate the issue. Since the remediation level is official-fix, applying the vendor's update is the recommended action.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-03-28T10:49:05.633Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 68ee6cbb1b3029e3c7e04032
Added to database: 10/14/2025, 15:31:07 UTC
Last enriched: 08/11/2026, 13:07:49 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 228
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