CVE-2025-25249
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
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Sep 9, 2026
- US federal agencies must remediate it by Sep 12, 2026 (BOD 22-01)
- First attack observed 237 days after disclosure
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source: CISA KEV · Sep 9, 2026 Sep 8, 2026
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| fortinet | fortios | < 6.4.17 |
| fortinet | fortiswitchmanager | < 7.0.6 |
| fortinet | fortisase | 25.1.39 |
Related articles
This product uses the NVD API but is not endorsed or certified by the NVD.