CVE-2026-59837
Undergoing Analysis
Undergoing Analysis - In Progress
Stack-Based Buffer Overflow in Fortinet FortiOS and FortiProxy
Vulnerability report for CVE-2026-59837, 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 stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | From 7.4.0 (inc) to 7.4.1 (inc) |
| fortinet | fortios | 7.2 |
| fortinet | fortipam | From 1.8.0 (inc) to 1.8.2 (inc) |
| fortinet | fortipam | 1.7 |
| fortinet | fortipam | 1.6 |
| fortinet | fortipam | 1.5 |
| fortinet | fortipam | 1.4 |
| fortinet | fortipam | 1.3 |
| fortinet | fortipam | 1.2 |
| fortinet | fortipam | 1.1 |
| fortinet | fortipam | 1.0 |
| 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-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
