A improper authentication 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 an unauthenticated attacker to gain access to other users' secure email accounts via crafted HTTP requests.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Fortinet FortiMail unaffected
Version Status Constraints
8.0.0 affected ≤ 8.0.1
7.6.0 affected ≤ 7.6.6
7.4.0 affected ≤ 7.4.8
7.2.0 affected ≤ 7.2.9
7.0.0 affected ≤ 7.0.9

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Fortinet Subscribe
Fortimail Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to FortiMail version 8.0.2 or above Upgrade to FortiMail version 7.6.7 or above Upgrade to FortiMail version 7.4.9 or above

Workaround

No workaround given by the vendor.

References
Link Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-209 cve-icon
History

Wed, 11 Nov 2026 21:45:00 +0000

Type Values Removed Values Added
Description A improper authentication 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 an unauthenticated attacker to gain access to other users' secure email accounts via crafted HTTP requests.
First Time appeared Fortinet
Fortinet fortimail
Weaknesses CWE-287
CPEs cpe:2.3:a:fortinet:fortimail:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.0.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.2.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.4.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:7.6.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimail:8.0.1:*:*:*:*:*:*:*
Vendors & Products Fortinet
Fortinet fortimail
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: fortinet

Published:

Updated: 2026-11-11T21:29:09.159Z

Reserved: 2026-11-10T20:03:42.195Z

Link: CVE-2026-126157

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses