Is It On KEV?

Fortinet Multiple Products

YES - ON THE CISA KEV LIST
CVE-2025-25249

Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability

CISA catalog due date2026-09-12
60 days past due
EPSS exploit probability (next 30 days)3.7% · 90percentile
From CVE publication to KEV listing239 days (2026-01-13 → 2026-09-09)
Remediation window (KEV listing to due date)3 days
Days on the KEV list63 days
Date added to KEV2026-09-09
Known ransomware campaign useUnknown
VendorFortinet
ProductMultiple Products
Weaknesses (CWE)CWE-122, CWE-787

Fortinet: 32 entries (1.8% of all KEV entries are from this vendor); 9 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

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.

Required action (CISA)

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.

Notes

https://fortiguard.fortinet.com/psirt/FG-IR-25-084 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2025-25249

References

Other KEV entries for this vendor: Fortinet

Fortinet - Vendors with KEV entries

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