CVE-2023-44247Network attack vector

Privileged code execution via double-free memory corruption

Published May 14, 2024 · Updated Jan 14, 2026

Double free in Fortinet FortiOS 6.4.16 and earlier allows remote authenticated users with administrative privileges to execute code via HTTP requests. Public records do not identify the affected component or disclose which request-driven allocation is freed twice. Administrative privileges and network access to an HTTP or HTTPS interface are required; successful exploitation executes commands with appliance-level impact.

CVSS severity6.6
Medium
EPSS probability1.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in Fortinet FortiOS 6.4.16 and earlier allows remote authenticated users with administrative privileges to execute code via HTTP requests. Public records do not identify the affected component or disclose which request-driven allocation is freed twice. Administrative privileges and network access to an HTTP or HTTPS interface are required; successful exploitation executes commands with appliance-level impact.

The record

CVE
CVE-2023-44247
Published
May 14, 2024
Updated
Jan 14, 2026
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-415, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.2.0 <=6.2.*
  2. Affected versionversion=6.4.0 <=6.4.*
  3. Affected versionversion=6.4.0 <=6.4.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Fortinet · FortiOSversion=6.2.0 <=6.2.*; version=6.4.0 <=6.4.*; version=6.4.0 <=6.4.16

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.6Fortinet, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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