OS Command Injection Vulnerability in Fortinet FortiMail Products
CVE-2026-126148

9.8CRITICAL

Key Information:

Vendor

Fortinet
Status
Fortimail
Vendor
CVE Published:
11 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-126148?

The vulnerability in Fortinet's FortiMail products allows an unauthenticated attacker to exploit improper neutralization of special elements in OS command execution. This flaw may enable the attacker to execute arbitrary code or commands through specially crafted HA join-request packets. Users of affected versions are advised to implement the latest security updates to mitigate risks.

Affected Version(s)

FortiMail 8.0.0 <= 8.0.1

FortiMail 7.6.0 <= 7.6.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-126148
Created by googlesky

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-200

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.