# CVE-2026-18902: H3C NX15 command injection in WAN repeater configuration

Source: https://junglewise.ai/threats/cve-2026-18902-h3c-nx15-command-injection-in-wan-repeater-configuration  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-05. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-18902 · Severity: high · CVSS 7.2 · Published 2026-08-05

H3C NX15 is a network device used to manage and configure connectivity. A command injection vulnerability in the WAN repeater configuration API allows an authenticated attacker to execute arbitrary commands remotely on the device, potentially compromising network operations and data integrity.

Technologies: [H3C NX15](https://junglewise.ai/threats/technologies/nx15). Vendors: [H3C](https://junglewise.ai/threats/vendors/h3c).

## Quick answers

**Is CVE-2026-18902 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18902 being exploited in the wild.

**How severe is CVE-2026-18902?** High severity, with a CVSS score of 7.2, published 5 August 2026.

**Which products and versions are affected?** H3C NX15 V100R017.

**Is there a fix for CVE-2026-18902?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-18902 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-18902?** Check whether you run H3C NX15 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a command injection vulnerability (CWE-78) in the esps.wan.repeater.set/repeaterproc API endpoint of the /api/esps interface. The vulnerability exists in the my2P4key parameter, which does not properly sanitize user input before passing it to system commands. An authenticated attacker with access to the device's API can inject arbitrary OS commands through this parameter to achieve remote code execution. The exploit is publicly available and proof-of-concept code has been disclosed.

## Affected products

- H3C NX15 V100R017

## Timeline

- 2026-08-05: disclosed
- other: Exploit is public and may be in active use

## References

- [https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/esps.wan.repeater.set-repeaterproc/poc/postauth_esps_wan_repeater_repeaterproc_rce.py](https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/esps.wan.repeater.set-repeaterproc/poc/postauth_esps_wan_repeater_repeaterproc_rce.py)
- [https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/esps.wan.repeater.set-repeaterproc/report/postauth_esps_wan_repeater_repeaterproc_rce_report.md](https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/esps.wan.repeater.set-repeaterproc/report/postauth_esps_wan_repeater_repeaterproc_rce_report.md)

## Related threats

- [H3C NX15 dangerous routine exposure in Web API](https://junglewise.ai/threats/cve-2026-18901-h3c-nx15-dangerous-routine-exposure-in-web-api)
- [H3C NX15 OS command injection in Backend RPC](https://junglewise.ai/threats/cve-2026-18900-h3c-nx15-os-command-injection-in-backend-rpc)
- [H3C NX15 command injection in reload.reload_config](https://junglewise.ai/threats/cve-2026-18814-h3c-nx15-command-injection-in-reload-reload-config)
- [H3C NX15 command injection in /api/esps delete](https://junglewise.ai/threats/cve-2026-18813-h3c-nx15-command-injection-in-api-esps-delete)
- [H3C NX15 command injection in esps.ipv6.wan](https://junglewise.ai/threats/cve-2026-18812-h3c-nx15-command-injection-in-esps-ipv6-wan)