SB2026111144 - Missing authentication for critical function in FortiMail
Published: November 11, 2026
Security Bulletin ID
SB2026111144
CSH Severity
High
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) Missing authentication for critical function (CVE-ID: CVE-2026-126157)
CWE-ID: CWE-306 - Missing Authentication for Critical Function
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to missing authentication for critical function. An unauthenticated attacker can gain access to other users' secure email accounts via crafted HTTP requests.
Remediation
Install update from vendor's website.