---
id: "CVE-2026-112373"
kind: "vulnerability"
aliases: ["CVE-2026-112373"]
title: "H3C Magic NX15 router: remote stack buffer overflow in usrlist"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["firmware", "h3c", "infrastructure", "magic-nx15", "router"]
not_affected_if: []
published_at: "2026-10-20T00:17:30+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T03:44:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112373", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# H3C Magic NX15 router: remote stack buffer overflow in usrlist

H3C Magic NX15 firmware V100R017 has a stack-based buffer overflow in the function sub_416874 of /usr/bin/usrlist. A remote attacker can trigger it to corrupt memory on the device, and public exploit code exists.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112373

## From the sources

A security vulnerability has been detected in H3C Magic NX15 NX15V100R017. This impacts the function sub_416874 of the file /usr/bin/usrlist. Such manipulation leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_