Authentication Bypass in Fortinet FortiMail

Publication date: 2026-11-11

Last updated on: 2026-11-11

Assigner: Fortinet, Inc.

Description

A incorrect implementation of authentication algorithm 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 remote attacker to gain elevation of privilege (account takeover) via a crafted request.

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Meta Information

Published

2026-11-11

Last Modified

2026-11-11

Generated

2026-11-12

EPSS Evaluated

N/A

NVD

CVE-2026-126151

EUVD

EUVD-2026-123828

Affected Vendors & Products

Vendor	Product	Version / Range
Fortinet	FortiMail	From 8.0.0 (inc) to 8.0.1 (inc)
Fortinet	FortiMail	From 7.6.0 (inc) to 7.6.6 (inc)
Fortinet	FortiMail	From 7.4.0 (inc) to 7.4.8 (inc)
Fortinet	FortiMail	From 7.2.0 (inc) to 7.2.9 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-303	The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

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