#VU126000 Missing Authentication for Critical Function in FortiOS - CVE-2025-53847

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Main Vulnerability Database Vulnerabilities #VU126000

#VU126000 Missing Authentication for Critical Function in FortiOS - CVE-2025-53847

Published: April 14, 2026


Vulnerability identifier: #VU126000
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-53847
CWE-ID: CWE-306
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Vulnerable software:
FortiOS
Software vendor:
Fortinet, Inc

Description

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 updates from vendor's website.

External links