CVE-2026-18810Public exploitNetwork attack vector

Unauthenticated WAN reconfiguration via pre-auth wizard

Published Aug 4, 2026 · Updated Aug 4, 2026

Missing authentication in the web setup wizard of H3C Magic NX15 V100R017 allows remote attackers to alter WAN settings before login. The /www/api dispatcher routes /api/wizard/networkSetup before FCGI_UserAuth, and networkSetup.lua forwards attacker-controlled fields to the privileged esps.wan set operation. Reachability to the web management interface is sufficient to disable WAN access or replace addressing, DNS, and PPPoE configuration without user interaction.

CVSS severity7.3
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the web setup wizard of H3C Magic NX15 V100R017 allows remote attackers to alter WAN settings before login. The /www/api dispatcher routes /api/wizard/networkSetup before FCGI_UserAuth, and networkSetup.lua forwards attacker-controlled fields to the privileged esps.wan set operation. Reachability to the web management interface is sufficient to disable WAN access or replace addressing, DNS, and PPPoE configuration without user interaction.

The record

CVE
CVE-2026-18810
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
New H3C Technologies Co., Ltd.
Product
H3C Magic NX15 Wireless Router
Classifications
CWE-287, CWE-306
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesunauthenticated

What is affected?

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

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function

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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