CVE-2025-53843_CVE-2025-53843

6.9 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C

Description

A stack-based buffer overflow in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to execute unauthorized code or commands via specially crafted packets

Basic Information

ID CVE-2025-53843

Source fortinet

Published Nov 18, 2025 at 17:01

Modified Nov 18, 2025 at 20:21

Affected Product

Vendor Fortinet

Product FortiOS

Version 7.6.0

Affected Versions Fortinet FortiOS 7.6.0
Fortinet FortiOS 7.4.0
Fortinet FortiOS 7.2.0
Fortinet FortiOS 7.0.0
Fortinet FortiOS 6.4.0

CWE Classification

CWE-121

References

fortiguard.fortinet.com /psirt/FG-IR-25-358

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    "lastseen": "",
    "description": "A stack-based buffer overflow in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to execute unauthorized code or commands via specially crafted packets",
    "published": "2025-11-18T17:01:28.239Z",
    "modified": "2025-11-18T20:21:12.365Z",
    "type": "cve",
    "title": "CVE-2025-53843",
    "source": "fortinet",
    "references": "https://fortiguard.fortinet.com/psirt/FG-IR-25-358",
    "id": "CVE-2025-53843",
    "bulletinFamily": "",
    "cwe": [
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    ],
    "cvelist": null,
    "sourceData": "Fortinet FortiOS 7.6.0\nFortinet FortiOS 7.4.0\nFortinet FortiOS 7.2.0\nFortinet FortiOS 7.0.0\nFortinet FortiOS 6.4.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "FortiOS",
    "version": "7.6.0",
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    "ai_description": "",
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