SB2025111875 - CRLF header injection in FortiMail
Published: November 18, 2025
Security Bulletin ID
SB2025111875
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) CRLF injection (CVE-ID: CVE-2025-54972)
CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
CVSSv4: 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
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.
Remediation
Install update from vendor's website.