Fortinet

CVE-2026-126149: A integer overflow or wraparound 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, FortiMai

CVE-2026-126149 Nov 11, 2026 Source: Vendor

A integer overflow or wraparound 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 crash the daemon.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-126149

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Credited

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CVE-2026-126149 BR2026-0000-047407 unclaimed

Credited as Theo Leleu of the Fortinet Product Security team with the use of the frontier AI model: GPT-5