CRLF injection in FortiMail - CVE-2025-54972
Published: November 18, 2025
Vulnerability identifier: #VU118606
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-54972
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiMail
FortiMail
Detailed vulnerability description
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data in FortiMail user GUI. A remote attacker can inject headers in the response via convincing a user to click on a specifically crafted link.
How to mitigate CVE-2025-54972
Install updates from vendor's website.