CVE-2025-64157
Format String Vulnerability in Fortinet FortiOS Enables Code Execution
Publication date: 2026-02-10
Last updated on: 2026-02-12
Assigner: Fortinet, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | From 7.0.0 (inc) to 7.4.10 (exc) |
| fortinet | fortios | From 7.6.0 (inc) to 7.6.5 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-134 | The product uses a function that accepts a format string as an argument, but the format string originates from an external source. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a use of externally-controlled format string issue found in Fortinet FortiOS versions 7.6.0 through 7.6.4, 7.4.0 through 7.4.9, 7.2.0 through 7.2.11, and all versions of 7.0. It allows an authenticated administrator to execute unauthorized code or commands by using a specially crafted configuration.
How can this vulnerability impact me? :
The impact of this vulnerability is that an authenticated admin could execute unauthorized code or commands on the affected FortiOS device. This could lead to a complete compromise of the system, including unauthorized access, data manipulation, or disruption of services.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
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What immediate steps should I take to mitigate this vulnerability?
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