SB20260414124 - Authentication bypass in FortiOS CAPWAP daemon
Published: April 14, 2026
Security Bulletin ID
SB20260414124
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Missing Authentication for Critical Function (CVE-ID: CVE-2025-53847)
The vulnerability allows a remote non-authenticated attacker to manipulate data.
The vulnerability exists due to missing authentication for critical function in CAPWAP daemon. A remnote unauthenticated attacker on the same local IP subnet can write device configuration via specially crafted requests. To be successful, this attack requires the targeted FortiGate device to run a specific, non default configuration.
Remediation
Install update from vendor's website.