OS Command Injection Vulnerability in H3C NX15 Backend RPC Component
CVE-2026-18900

8.6HIGH

Key Information:

Vendor

H3c
Status
Nx15
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18900?

A vulnerability has been discovered in the H3C NX15 product, specifically in the Backend RPC component's file.exec function located at /api/esps. This flaw allows for remote command injection through manipulation of the argument File. Attackers may exploit this weakness to execute arbitrary commands on the affected system, potentially compromising its integrity and control. The vulnerability has been publicly disclosed, and appropriate measures should be taken to secure the product.

Affected Version(s)

NX15 V100R017

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18900 - Proof of Concept

References

https://vuldb.com/vuln/385934
vdb-entrytechnical-description
https://vuldb.com/vuln/385934/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18900
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

coconut (VulDB User)
VulDB CNA Team
.