Paper/Archive/CVE-2026-126155

CVE-2026-126155

Fortinet FortiMail — A incorrect authorization vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through…

CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 No EPSS score.000 × 200.0 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

A incorrect authorization 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 obtain an authenticated IBE webmail session as any IBE recipient and read or send their encrypted mail via crafted HTTP requests.

Affected

ProductAffectedFixed inSource

FortiMail8.0.0 – 8.0.1–CNA

FortiMail7.6.0 – 7.6.6–CNA

FortiMail7.4.0 – 7.4.8–CNA

FortiMail7.2.0 – 7.2.9–CNA

Scores by source

fortinet (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:R

References

reffortiguard.fortinet.com/psirt/FG-IR-26-207