Is there a public exploit for CVE-2026-126151?

No public exploit for CVE-2026-126151 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-126151?

CVE-2026-126151 scores CVSS 7.5 (v3.1), rated high.

What does CVE-2026-126151 affect?

CVE-2026-126151 affects Fortinet FortiMail.

7.5 High

A incorrect implementation of authentication algorithm vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through…

CVE-2026-126151

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.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 11 November 2026
Last updated: 11 November 2026
Affected: Fortinet · FortiMail
Assigner: fortinet

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:R

At the source

EUVD (ENISA)

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-203

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