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CVE-2025-25249

HIGH CISA KEV

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

Published: Jan 13, 2026 Modified: Sep 10, 2026
CWE-122 CWE-787

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: HIGH Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (9)

Vendor Product Version
fortinet fortios * ≥ 6.4.0 < 7.0.18
fortinet fortios * ≥ 7.2.0 < 7.2.12
fortinet fortios * ≥ 7.4.0 < 7.4.9
fortinet fortios * ≥ 7.6.0 < 7.6.4
fortinet fortiswitchmanager * ≥ 7.0.0 < 7.0.6
fortinet fortiswitchmanager * ≥ 7.2.0 < 7.2.7
fortinet fortisase 25.1.39
fortinet fortisase 25.1.51
siemens ruggedcom_ape1808_firmware -

GitHub Security Advisory GHSA-mj8x-m8f5-x4w8

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0...

Risk Scores

CVSS Score 8.1 / 10
EPSS Score 2.40%

Top 17% most likely to be exploited

Threat Score 63.1 / 100

CISA Known Exploited

Date Added: 2026-09-09
Due Date: 2026-09-12
Required Action:

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.

Data Sources

NVD CISA KEV EPSS GitHub