CVE-2026-126156

EUVD-2026-123830
A authorization bypass through user-controlled key 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 take over an arbitrary IBE recipient account via crafted HTTP requests.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
fortinetCNA
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
fortinetfortimail
8.0.0 ≤
𝑥
≤ 8.0.1
CNA
fortinetfortimail
7.6.0 ≤
𝑥
≤ 7.6.6
CNA
fortinetfortimail
7.4.0 ≤
𝑥
≤ 7.4.8
CNA
fortinetfortimail
7.2.0 ≤
𝑥
≤ 7.2.9
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://fortiguard.fortinet.com/psirt/FG-IR-26-208