197 476
Advisory Published
CVE Published

CVE-2023-36641: DOS in headers management

First published: Tue Nov 14 2023(Updated: )

A null pointer dereference [CWE-476] in FortiOS and FortiProxy SSL VPN may allow an authenticated attacker to perform a DoS attack on the device via specifically crafted HTTP requests.


Affected SoftwareAffected VersionHow to fix
Fortinet FortiProxy>=1.0.0<=1.0.7
Fortinet FortiProxy>=1.1.0<=1.1.6
Fortinet FortiProxy>=1.2.0<=1.2.13
Fortinet FortiProxy>=2.0.0<=2.0.13
Fortinet FortiProxy>=7.0.0<=7.0.10
Fortinet FortiProxy>=7.2.0<=7.2.4
Fortinet FortiOS>=6.0.0<=6.0.17
Fortinet FortiOS>=6.2.0<=6.2.15
Fortinet FortiOS>=6.4.0<=6.4.14
Fortinet FortiOS>=7.0.0<=7.0.12
Fortinet FortiOS>=7.2.0<=7.2.5
Fortinet FortiOS=.
Fortinet FortiOS>=7.2.0<=7.2.5
Fortinet FortiOS>=7.0.0<=7.0.12
Fortinet FortiOS>=6.4
Fortinet FortiOS>=6.2
Fortinet FortiOS>=6.0
Fortinet FortiProxy>=7.2.0<=7.2.4
Fortinet FortiProxy>=7.0.0<=7.0.10
Fortinet FortiProxy>=2.0
Fortinet FortiProxy>=1.2
Fortinet FortiProxy>=1.1
Fortinet FortiProxy>=1.0


Please upgrade to FortiSASE version 23.3.b or above Please upgrade to FortiProxy version 7.2.5 or above Please upgrade to FortiProxy version 7.0.11 or above Please upgrade to FortiOS version 7.4.1 or above Please upgrade to FortiOS version 7.2.6 or above Please upgrade to FortiOS version 7.0.13 or above

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Frequently Asked Questions

  • What is the vulnerability ID for this Fortinet FortiProxy vulnerability?

    The vulnerability ID for this Fortinet FortiProxy vulnerability is CVE-2023-36641.

  • What is the severity of CVE-2023-36641?

    The severity of CVE-2023-36641 is medium, with a CVSS score of 6.2.

  • Which versions of Fortinet FortiProxy are affected by CVE-2023-36641?

    Fortinet FortiProxy versions 1.0.0 through 1.0.7, 1.1.0 through 1.1.6, 1.2.0 through 1.2.13, 2.0.0 through 2.0.13, 7.0.0 through 7.0.10, and 7.2.0 through 7.2.4 are affected by CVE-2023-36641.

  • Which versions of FortiOS are affected by CVE-2023-36641?

    FortiOS versions 6.0.0 through 6.0.17, 6.2.0 through 6.2.15, 6.4.0 through 6.4.14, 7.0.0 through 7.0.12, and 7.2.0 through 7.2.5 are affected by CVE-2023-36641.

  • How can I fix CVE-2023-36641?

    To fix CVE-2023-36641, it is recommended to update to a patched version of Fortinet FortiProxy or FortiOS when available. Please refer to the vendor's security advisory for more information.


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