# CVE-2026-18901: H3C NX15 dangerous routine exposure in Web API

Source: https://junglewise.ai/threats/cve-2026-18901-h3c-nx15-dangerous-routine-exposure-in-web-api  
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-2026-18901 · Severity: high · CVSS 7.2 · Published 2026-08-05

H3C NX15 is a network appliance used for enterprise networking and infrastructure management. The Web API component contains a vulnerability in the service.add function that exposes dangerous operations, potentially allowing remote attackers to execute unauthorized commands or escalate privileges on the affected device.

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

## Quick answers

**Is CVE-2026-18901 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18901 being exploited in the wild.

**How severe is CVE-2026-18901?** 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-2026-18901?** 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-2026-18901 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-18901?** 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

A vulnerability exists in the service.add function of the /api/esps endpoint in the Web API component of H3C NX15 V100R017. The flaw exposes dangerous routines that can be invoked remotely. Based on the public proof-of-concept references, this appears to be part of a post-authentication remote code execution chain. The vulnerability allows remote attackers to perform unauthorized actions, potentially leading to device compromise or privilege escalation. A CVSS score of 7.2 indicates significant impact and the exploit has been publicly disclosed.

## Affected products

- H3C NX15 V100R017

## Timeline

- 2026-08-05: disclosed

## References

- [https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/service_add_root_rce_chain/poc/postauth_service_add_rce.py](https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/service_add_root_rce_chain/poc/postauth_service_add_rce.py)
- [https://github.com/coconut652-7/IOT_Vul_Public/tree/main/H3C/NX15R017/service_add_root_rce_chain/report](https://github.com/coconut652-7/IOT_Vul_Public/tree/main/H3C/NX15R017/service_add_root_rce_chain/report)

## Related threats

- [H3C NX15 command injection in WAN repeater configuration](https://junglewise.ai/threats/cve-2026-18902-h3c-nx15-command-injection-in-wan-repeater-configuration)
- [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)