Path Traversal Vulnerability in Fortinet FortiMail Products
CVE-2026-126147

9.8CRITICAL

Key Information:

Vendor

Fortinet
Status
Fortimail
Vendor
CVE Published:
11 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-126147?

A path traversal vulnerability in Fortinet FortiMail products allows unauthenticated attackers to navigate to restricted directories, potentially leading to unauthorized command execution. This issue affects multiple versions, including FortiMail 8.0.0 through 8.0.1, and 7.x versions up through 7.6.6, as well as earlier versions from the 7.4 and 7.2 series, due to improper restrictions in pathname limitations. Attackers can exploit this flaw through specially crafted requests, opening doors for potentially malicious actions.

Affected Version(s)

FortiMail 8.0.0 <= 8.0.1

FortiMail 7.6.0 <= 7.6.6

FortiMail 7.4.0 <= 7.4.8

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-2026-126147
Created by googlesky

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-199

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

.