CVE-2026-59840

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

14/07/2026

Last modified:

11/08/2026

Description

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

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

4.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:fortinet:fortiproxy::::::::	7.2.0 (including)	7.4.14 (excluding)
cpe:2.3:a:fortinet:fortiproxy::::::::	7.6.0 (including)	7.6.6 (excluding)
cpe:2.3:o:fortinet:fortios::::::::	7.2.0 (including)	7.4.9 (excluding)
cpe:2.3:o:fortinet:fortios::::::::	7.6.0 (including)	7.6.2 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-59840

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools