HIGH CISA-KEV ACTIVELY EXPLOITED

CVE-2025-25249

Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability

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

References

Published: 2026-09-09 · Source: CISA-KEV · Feed updated: 2026-09-11
This high severity vulnerability was published on 2026-09-09 via CISA-KEV. ⚠ This vulnerability is in the CISA Known Exploited Vulnerabilities (KEV) catalog — it is being actively exploited in the wild. Affected: Fortinet: Multiple Products.

Risk Timeline

CVE Disclosed2026-09-09 · 2 days ago
CISA KEV — Actively ExploitedU.S. federal agencies required to patch · confirmed threat-actor activity

Remediation Resources

CISA / KEV
www.cisa.gov/known-exploited-vulnerabilities-catalog
NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2025-25249
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