CVE-2026-126151 · Infrastructure
NO FIX YET
FortiMail mail appliances implement an authentication algorithm incorrectly. An unauthenticated remote attacker can send a crafted request to gain elevated privileges and take over accounts.
first public Nov 11, 2026 · 1 source
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Organizations running FortiMail appliances in the affected version ranges, reachable from the network the attacker can reach. The sources do not say whether the flaw needs a specific configuration, so the affected ranges are the main signal. Teams on versions outside the listed ranges can skip it.
Not affected if version-outside-listed-ranges
Who cares email-security, fortimail, fortinet, self-hosted
get system status on the appliance.No fix yet, per the sources.
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.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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