# CVE-2023-41677 — Fortinet FortiOS

> As of 2024-08-02, CVE-2023-41677 is a HIGH-severity vulnerability in Fortinet FortiOS, CVSS v3.1 7.5, EPSS 0.7% (53.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2023-41677, 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:** 2024-08-02

## What is CVE-2023-41677?

A insufficiently protected credentials in Fortinet FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7, Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17 allows attacker to execute unauthorized code or commands via targeted social engineering attack

The record classifies CVE-2023-41677 under weakness class [CWE-522](https://intel.threadlinqs.com/cwe/CWE-522). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 927 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:U/RC:C`)
- **EPSS (FIRST):** 0.7% probability of exploitation in the next 30 days, higher than 53.7% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2024-04-09, last modified 2024-08-02

## Is CVE-2023-41677 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, FortiProxy

## How to fix CVE-2023-41677

Vendor advisory: [https://fortiguard.com/psirt/FG-IR-23-493](https://fortiguard.com/psirt/FG-IR-23-493). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2023-41677

1 tracked threat in the Threadlinqs corpus references CVE-2023-41677, 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, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [fortiguard.com](https://fortiguard.com/psirt/FG-IR-23-493)

Canonical: https://intel.threadlinqs.com/cve/CVE-2023-41677
Full detection coverage and IOCs for threats exploiting CVE-2023-41677 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp