CVE-2025-25249
Unknown
Unknown - Not Provided
Heap-Based Buffer Overflow in Fortinet FortiOS Enables Code Execution
Publication date: 2026-01-13
Last updated on: 2026-02-23
Assigner: Fortinet, Inc.
Description
Description
A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | From 7.6.0 (inc) to 7.6.3 (inc) |
| fortinet | fortios | From 7.4.0 (inc) to 7.4.8 (inc) |
| fortinet | fortios | From 7.2.0 (inc) to 7.2.11 (inc) |
| fortinet | fortios | From 7.0.0 (inc) to 7.0.17 (inc) |
| fortinet | fortios | From 6.4.0 (inc) to 6.4.16 (inc) |
| fortinet | fortisase | 25.2.b |
| fortinet | fortisase | 25.1.a.2 |
| fortinet | fortiswitchmanager | From 7.2.0 (inc) to 7.2.6 (inc) |
| fortinet | fortiswitchmanager | From 7.0.0 (inc) to 7.0.5 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a heap-based buffer overflow in multiple versions of Fortinet FortiOS, FortiSASE, and FortiSwitchManager. It allows an attacker to execute unauthorized code or commands by sending specially crafted packets to the affected systems.
How can this vulnerability impact me? :
The vulnerability can allow attackers to execute unauthorized code or commands on affected devices, potentially leading to system compromise, data breaches, or disruption of network services.
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