CVE-2026-18900Public exploitNetwork attack vector

Root command execution via unrestricted RPC forwarding

Published Aug 5, 2026 · Updated Aug 5, 2026

OS command execution in H3C Magic NX15 Wireless Router V100R017 allows remote authenticated users to execute commands as root via /api/esps. The magic_link.lua bridge maps attacker-controlled object, method, and argument fields directly to ubus without an allowlist, exposing rpcd's file.exec handler, which passes a supplied executable and arguments to execv(). An administrator web session is required; successful calls run with UID 0 and can fully control the router.

CVSS severity7.2
High
EPSS probability2.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command execution in H3C Magic NX15 Wireless Router V100R017 allows remote authenticated users to execute commands as root via /api/esps. The magic_link.lua bridge maps attacker-controlled object, method, and argument fields directly to ubus without an allowlist, exposing rpcd's file.exec handler, which passes a supplied executable and arguments to execv(). An administrator web session is required; successful calls run with UID 0 and can fully control the router.

The record

CVE
CVE-2026-18900
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
New H3C Technologies Co., Ltd.
Product
H3C Magic NX15 Wireless Router
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V100R017

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

New H3C Technologies Co., Ltd. · H3C Magic NX15 Wireless Routerversion=V100R017

Published CVSS scores

8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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