Improper Authentication in FortiMail - CVE-2026-126160
Published: November 11, 2026
Vulnerability identifier: #VU165267
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126160
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.
The vulnerability exists due to improper authentication in releasecontrol. An unauthenticated attacker can escalate privileges and release or delete quarantined messages for arbitrary mailboxes via a crafted quarantine release requests.
Affected software
FortiMail
How to mitigate CVE-2026-126160
Install update from vendor's website.
FortiMail - addressed in versions 7.4.9, 7.6.7, 8.0.2