CVE-2026-59840

MEDIUM CVSS 3.1: 4.3 EPSS 0.18%
Updated Jul 16, 2026
Fortinet
Parameter Value
CVSS 4.3 (MEDIUM)
Affected Versions 7.2.0 — 7.6.6
Fixed In 7.4.14
Type CWE-126
Vendor Fortinet
Public PoC No

A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions may allow attacker to information disclosure via <insert attack vector here>

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Fortinet Fortiproxy
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
7.2.0 7.4.14
Fortinet Fortiproxy
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
7.6.0 7.6.6
Fortinet Fortios
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
7.2.0 7.4.9
Fortinet Fortios
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
7.6.0 <= 7.6.2