CVE-2025-25249
Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
Summary
Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows an attacker to execute unauthorized code or commands via specially crafted packets.
Affected software
Vendor: Fortinet · Product: Multiple Products
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Fortinet
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2018-13379 | Fortinet FortiOS SSL VPN Path Traversal Vulnerability | 100.0% | Yes |
| CVE-2022-40684 | Fortinet Multiple Products Authentication Bypass Vulnerability | 100.0% | Yes |
| CVE-2025-25257 | Fortinet FortiWeb SQL Injection Vulnerability | 99.8% | Yes |
| CVE-2022-42475 | Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability | 99.5% | Yes |
| CVE-2023-48788 | Fortinet FortiClient EMS SQL Injection Vulnerability | 98.4% | Yes |
| CVE-2024-55591 | Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability | 98.3% | Yes |
| CVE-2024-47575 | Fortinet FortiManager Missing Authentication Vulnerability | 95.1% | Yes |
| CVE-2026-21643 | Fortinet FortiClient EMS SQL Injection Vulnerability | 94.1% | Yes |
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