CVE-2025-3543Public exploit

Authenticated command injection via unfiltered POST body

Published Apr 14, 2025 · Updated Apr 14, 2025

Command injection in H3C Magic router firmware V100R014 and earlier allows remote authenticated users to execute commands over the local network. FCGI_WizardProtoProcess inserts the unfiltered POST body into a Lua command string and passes it through FCGI_popen to the shell. Access requires the router's local network and low-privilege authentication; successful injection runs commands in the router's execution context.

CVSS severity8.6
High
EPSS probability1.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in H3C Magic router firmware V100R014 and earlier allows remote authenticated users to execute commands over the local network. FCGI_WizardProtoProcess inserts the unfiltered POST body into a Lua command string and passes it through FCGI_popen to the shell. Access requires the router's local network and low-privilege authentication; successful injection runs commands in the router's execution context.

The record

CVE
CVE-2025-3543
Published
Apr 14, 2025
Updated
Apr 14, 2025
Vendor
New H3C Technologies Co., Ltd.
Product
H3C NX400
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record 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=V100R014

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

New H3C Technologies Co., Ltd. · H3C NX400version=V100R014
New H3C Technologies Co., Ltd. · H3C Magic NX30 Proversion=V100R014
New H3C Technologies Co., Ltd. · H3C Magic NX15 Wireless Routerversion=V100R014
New H3C Technologies Co., Ltd. · H3C Magic R3010version=V100R014

Published CVSS scores

8.6VulDBCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.0VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7VulDBAV:A/AC:L/Au:S/C:C/I:C/A:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('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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