Vulnerability · Published Aug 5, 2026 · Assigned by VulDB

CVE-2026-18900H3C NX15 Backend RPC esps file.exec os command injection

High 7.2

In plain English

A high-severity OS command injection in NX15 from H3C. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.8% (higher than 90% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)3.8%top 9.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in H3C NX15 V100R017. This impacts the function file.exec of the file /api/esps of the component Backend RPC. This manipulation of the argument File causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

Affected products (as reported)

Vendor	Product	Versions
H3C	NX15	V100R017

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-385934 | H3C NX15 Backend RPC esps file.exec os command injection vdb-entry, technical-description
VDB-385934 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-18900 | CVE Analysis and Report third-party-advisory
Submit #857814 | H3C NX15 Router NX15V100R017 Exposed Dangerous Function third-party-advisory
https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/file_exec_root_rce/report/postauth_file_exec_rce_report.md related
https://github.com/coconut652-7/IOT_Vul_Public/blob/main/H3C/NX15R017/file_exec_root_rce/poc/postauth_file_exec_rce.py exploit