CVE-2026-126165
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
A memory allocation with excessive size value vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow a remote unauthenticated attacker to cause a denial of service via a specially crafted attachment delivered over SMTP.
| CWE | CWE-789 |
| Vendor | fortinet |
| Product | fortimail |
| Ecosystems | |
| Industries | NetworkingSecurity |
| Published | Nov 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for fortinet fortimail
Be the first to know when new high vulnerabilities affecting fortinet fortimail are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Fortinet / FortiMail
8.0.0 ≤ 8.0.1 7.6.0 ≤ 7.6.6 7.4.0 ≤ 7.4.8 7.2.0 ≤ 7.2.9 7.0.0 ≤ 7.0.9