# CVE-2023-44247 — Fortinet FortiOS

> As of 2026-01-14, CVE-2023-44247 is a MEDIUM-severity vulnerability in Fortinet FortiOS, CVSS v3.1 6.5, EPSS 1.2% (68.4th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2023-44247, most recently “Multiple Fortinet FortiOS Vulnerabilities (incl. CVE-2024-23113) Affect Siemens RUGGEDCOM APE1808 via Bundled Fortinet NGFW < V7.4.3 (SSA-832273)”.

**Last updated:** 2026-01-14

## What is CVE-2023-44247?

A double free vulnerability [CWE-415] vulnerability in Fortinet FortiOS 6.4 all versions may allow a privileged attacker to execute code or commands via crafted HTTP or HTTPs requests.

The record classifies CVE-2023-44247 under weakness class [CWE-415](https://intel.threadlinqs.com/cwe/CWE-415). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 892 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.5 — MEDIUM (`CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C`)
- **EPSS (FIRST):** 1.2% probability of exploitation in the next 30 days, higher than 68.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2024-05-14, last modified 2026-01-14

## Is CVE-2023-44247 being exploited?

It currently carries a trending score of 22 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Fortinet](https://intel.threadlinqs.com/vendors/fortinet): FortiOS

## How to fix CVE-2023-44247

No vendor patch reference has been recorded for CVE-2023-44247 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2023-44247

1 tracked threat in the Threadlinqs corpus references CVE-2023-44247, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Multiple Fortinet FortiOS Vulnerabilities (incl. CVE-2024-23113) Affect Siemens RUGGEDCOM APE1808 via Bundled Fortinet NGFW < V7.4.3 (SSA-832273)](https://intel.threadlinqs.com/threat/TL-2026-2489) — CRITICAL · 2026-09-13

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [fortiguard.com](https://fortiguard.com/psirt/FG-IR-23-195)

Canonical: https://intel.threadlinqs.com/cve/CVE-2023-44247
Full detection coverage and IOCs for threats exploiting CVE-2023-44247 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp