FortiWeb Auth Bypass via Hostname Spoofing CVE-2025-48840
CVE-2025-48840 Published on March 10, 2026
An authentication bypass by spoofing vulnerability in Fortinet FortiWeb 7.6.0 through 7.6.3, FortiWeb 7.4.0 through 7.4.8, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow a remote unauthenticated attacker to bypass hostname restrictions via a specially crafted request.
Vulnerability Analysis
CVE-2025-48840 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Authentication Bypass by Spoofing
This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Products Associated with CVE-2025-48840
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Affected Versions
Fortinet FortiWeb:- Version 7.6.0, <= 7.6.3 is affected.
- Version 7.4.0, <= 7.4.8 is affected.
- Version 7.2.0, <= 7.2.12 is affected.
- Version 7.0.0, <= 7.0.12 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.