# CVE-2023-42785 — Fortinet FortiOS

> As of 2025-01-14, CVE-2023-42785 is a MEDIUM-severity vulnerability in Fortinet FortiOS, CVSS v3.1 6.4, EPSS 0.7% (52.2th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2023-42785, 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:** 2025-01-14

## What is CVE-2023-42785?

A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.

The record classifies CVE-2023-42785 under weakness class [CWE-476](https://intel.threadlinqs.com/cwe/CWE-476). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 647 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.4 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:F/RL:X/RC:C`)
- **EPSS (FIRST):** 0.7% probability of exploitation in the next 30 days, higher than 52.2% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2025-01-14

## Is CVE-2023-42785 being exploited?

It currently carries a trending score of 18 in the Threadlinqs vulnerability feed.

## Affected products and versions

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

## How to fix CVE-2023-42785

No vendor patch reference has been recorded for CVE-2023-42785 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-2023-42785

1 tracked threat in the Threadlinqs corpus references CVE-2023-42785, 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.fortinet.com](https://fortiguard.fortinet.com/psirt/FG-IR-23-293)

Canonical: https://intel.threadlinqs.com/cve/CVE-2023-42785
Full detection coverage and IOCs for threats exploiting CVE-2023-42785 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp