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    CVE-2023-27997

    A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

    Published:Jun 13, 2023
    Last Modified:Oct 24, 2025
    EPS:Jun 13, 2023
    EPSS Score:0.91085
    CVSS Score:9.2

    CISA Notification

    Description

    A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Jul 4, 2023
    1165 days ago
    Alert Date
    Jun 13, 2023
    1186 days ago

    Affected Products

    Vendor
    Fortinet
    Product
    Fortigate 6000
    Vendor
    Fortinet
    Product
    Fortigate 7000
    Vendor
    Fortinet
    Product
    Fortios
    Vendor
    Fortinet
    Product
    Fortiproxy

    Exploits

    https://github.com/abraxas/Fortigate-SSL-VPN-Exploit-Kithttps://github.com/BishopFox/CVE-2023-27997-checkhttps://github.com/Cyb3rEnthusiast/CVE-2023-27997https://github.com/delsploit/CVE-2023-27997https://github.com/imbas007/CVE-2023-27997-Checkhttps://github.com/lexfo/xortigate-cve-2023-27997https://github.com/node011/CVE-2023-27997-POChttps://github.com/onurkerembozkurt/fgt-cve-2023-27997-exploithttps://github.com/puckiestyle/cve-2023-27997https://github.com/rio128128/CVE-2023-27997-POChttps://github.com/TechinsightsPro/ShodanFortiOShttps://github.com/Vampsecure-Labs/vamp-forticheck

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High