CVE-2026-59840
Undergoing Analysis
Undergoing Analysis - In Progress
Buffer Over-Read in Fortinet FortiOS and FortiProxy
Vulnerability report for CVE-2026-59840, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-07-14
Last updated on: 2026-07-14
Assigner: Fortinet, Inc.
Description
Description
A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | From 7.6.0 (inc) to 7.6.2 (inc) |
| fortinet | fortios | From 7.4.0 (inc) to 7.4.8 (inc) |
| fortinet | fortios | 7.2 |
| fortinet | fortiproxy | From 7.6.0 (inc) to 7.6.5 (inc) |
| fortinet | fortiproxy | From 7.4.0 (inc) to 7.4.13 (inc) |
| fortinet | fortiproxy | 7.2 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-126 | The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. |
