FortiWeb
CVE-2025-48840: Authentication bypass by spoofing in FortiWeb
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiWeb 7.6.0 to 7.6.3 | 7.6.4 or later |
| FortiWeb 7.4.0 to 7.4.8 | 7.4.9 or later |
| FortiWeb 7.2.0 to 7.2.12 | Upgrade past 7.2.12; see the advisory |
| FortiWeb 7.0.0 to 7.0.12 | Upgrade past 7.0.12; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.