CVE-2025-25249
Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-09-09. Federal due date: 2026-09-12.
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.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Fortinet | FortiOS | Versions 7.4.0 ≤7.4.7, 7.2.4 ≤7.2.11, 7.6.0 ≤7.6.2 |
| Fortinet | FortiSwitchManager | Version 7.2.2 ≤7.2.5 |
| Fortinet | Fortios | from 6.4.0 before 7.0.18 from 7.2.0 before 7.2.12 from 7.4.0 before 7.4.9 from 7.6.0 before 7.6.4 |
| Fortinet | Fortiswitchmanager | from 7.0.0 before 7.0.6 from 7.2.0 before 7.2.7 |
| Fortinet | Fortisase | Versions 25.1.39, 25.1.51 |
| Siemens | Ruggedcom Ape1808 Firmware | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- CISA KEV catalog
- https://fortiguard.fortinet.com/psirt/FG-IR-25-084
- https://cert-portal.siemens.com/productcert/html/ssa-864900.html
- https://socradar.io/blog/cve-2025-25249-pivotc2-fortigate-rat/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249