Stack-Based Buffer Overflow in Fortinet FortiOS and FortiPAM Products
CVE-2026-59837

5.9MEDIUM

Key Information:

Vendor

Fortinet
Status
Fortipam
Fortisase
Fortiproxy
FortiOS
Vendor
CVE Published:
14 July 2026

What is CVE-2026-59837?

A stack-based buffer overflow vulnerability has been identified in Fortinet's FortiOS and FortiPAM products. This issue affects various versions of FortiOS (7.4.0 to 7.4.1, and 7.2 all versions) and multiple versions of FortiPAM (from 1.0 to 1.8.2). A privileged authenticated attacker may exploit this vulnerability by bypassing stack protection and Address Space Layout Randomization (ASLR), potentially allowing the execution of arbitrary code or commands through specially crafted HTTP requests. Organizations using the affected products are urged to apply all necessary patches and mitigations as soon as possible.

Affected Version(s)

FortiOS 7.4.0 <= 7.4.1

FortiOS 7.2.0 <= 7.2.13

FortiOS 7.0.0 <= 7.0.19

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-148

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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