Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
CVE-2025-25249 Exploited
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.
Being exploited in the wild
Catalogued 9 September 2026 · US federal remediation deadline 12 September 2026
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…
Assessment
- CVSS
- Not yet scored
- Severity
- Unscored
- Known exploited
- Yes — listed in the CISA KEV catalog
- Exploit availability
- CISA KEV
- Published
- 9 September 2026
- Last updated
- 9 September 2026
- Affected
- Fortinet · Multiple Products
- Weakness
- CWE-122, CWE-787
At the source
References
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2025-25249