CVE-2025-53844

A out-of-bounds write 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 allows attacker to execute unauthorized code or commands via specially crafted packets.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://fortiguard.fortinet.com/psirt/FG-IR-26-123	Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-864900.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::

History

09 Jun 2026, 10:16

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-864900.html -

15 May 2026, 14:04

Type	Values Removed	Values Added
References	~~() https://fortiguard.fortinet.com/psirt/FG-IR-26-123 -~~	() https://fortiguard.fortinet.com/psirt/FG-IR-26-123 - Vendor Advisory
CPE		cpe:2.3:o:fortinet:fortios::::::::
First Time		Fortinet fortios Fortinet

12 May 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-12 18:16

Updated : 2026-06-17 09:39

NVD link : CVE-2025-53844

Mitre link : CVE-2025-53844

CVE.ORG link : CVE-2025-53844

JSON object : View

Products Affected

fortinet

fortios

CWE

CWE-787

Out-of-bounds Write

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"published": "2026-05-12T18:16:35.983", "references": [{"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-123", "tags": ["Vendor Advisory"], "source": "psirt@fortinet.com"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-864900.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "psirt@fortinet.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "A out-of-bounds write 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 allows attacker to execute unauthorized code or commands via specially crafted packets."}], "lastModified": "2026-06-17T09:39:01.180", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8FAAA2E-7A53-4F6B-A9C7-1E2B4CB5F7EB", "versionEndExcluding": "7.2.12", 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