---
id: CVE-2023-36641
title: >-
  A numeric truncation error vulnerability in Fortinet FortiOS 7.4.0, FortiOS
  7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4 all versions,
  FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through
  7.2.4, …
summary: >-
  A numeric truncation error vulnerability in Fortinet FortiOS 7.4.0, FortiOS
  7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4 all versions,
  FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through
  7.2.4, …
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C'
cvssSource: cna
cwe:
  - CWE-197
vendor: Fortinet
product: FortiOS
affected:
  - FortiOS 7.4.0
  - FortiOS >= 7.2.0 <= 7.2.5
  - FortiOS >= 7.0.0 <= 7.0.12
  - FortiOS >= 6.4.0 <= 6.4.16
  - FortiOS >= 6.2.0 <= 6.2.17
  - FortiOS >= 6.0.0 <= 6.0.18
  - FortiProxy >= 7.2.0 <= 7.2.4
  - FortiProxy >= 7.0.0 <= 7.0.10
  - FortiProxy >= 2.0.0 <= 2.0.14
  - FortiProxy >= 1.2.1 <= 1.2.13
  - FortiProxy 01.02.00
  - FortiProxy >= 1.1.4 <= 1.1.6
  - FortiProxy >= 01.01.00 <= 01.01.03
  - FortiProxy >= 01.00.00 <= 01.00.07
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-08-30T18:21:33.734110Z'
published: '2023-11-14'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T13:48:28.830Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-36641'
references:
  - url: 'https://fortiguard.com/psirt/FG-IR-23-151'
    label: 'https://fortiguard.com/psirt/FG-IR-23-151'
tags:
  - cve.org
epss: 0.01269
epssPercentile: 0.69579
ingestedAt: '2026-10-22T22:00:50.273Z'
---

## Overview

A numeric truncation error vulnerability in Fortinet FortiOS 7.4.0, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4 all versions, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through 7.2.4, FortiProxy 7.0.0 through 7.0.10, FortiProxy 2.0 all versions, FortiProxy 01.02 all versions, FortiProxy 1.2 all versions, FortiProxy 01.01 all versions, FortiProxy 1.1 all versions, FortiProxy 01.00 all versions allows attacker to denial of service via specifically crafted HTTP requests.

## Affected

- `FortiOS 7.4.0`
- `FortiOS >= 7.2.0 <= 7.2.5`
- `FortiOS >= 7.0.0 <= 7.0.12`
- `FortiOS >= 6.4.0 <= 6.4.16`
- `FortiOS >= 6.2.0 <= 6.2.17`
- `FortiOS >= 6.0.0 <= 6.0.18`
- `FortiProxy >= 7.2.0 <= 7.2.4`
- `FortiProxy >= 7.0.0 <= 7.0.10`
- `FortiProxy >= 2.0.0 <= 2.0.14`
- `FortiProxy >= 1.2.1 <= 1.2.13`
- `FortiProxy 01.02.00`
- `FortiProxy >= 1.1.4 <= 1.1.6`
- `FortiProxy >= 01.01.00 <= 01.01.03`
- `FortiProxy >= 01.00.00 <= 01.00.07`

## Remediation

Upgrade to FortiProxy version 7.2.5 or above
Upgrade to FortiProxy version 7.0.11 or above
Upgrade to FortiOS version 7.4.1 or above
Upgrade to FortiOS version 7.2.6 or above
Upgrade to FortiOS version 7.0.13 or above