CVE-2018-25317Public exploitNetwork attack vector

Unauthenticated DNS hijacking via forged admin cookie

Published Apr 29, 2026 · Updated Apr 29, 2026

Authentication bypass in Shenzhen Tenda Technology W3002R firmware 5.07.64 allows remote attackers to rewrite DNS settings. The /goform/AdvSetDns handler treats a forged admin language cookie as an authenticated request and applies attacker-selected primary and secondary DNS servers. Network access to the management interface is sufficient, and the DNS rewrite redirects client name resolution toward attacker-controlled infrastructure.

CVSS severity9.3
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Shenzhen Tenda Technology W3002R firmware 5.07.64 allows remote attackers to rewrite DNS settings. The /goform/AdvSetDns handler treats a forged admin language cookie as an authenticated request and applies attacker-selected primary and secondary DNS servers. Network access to the management interface is sufficient, and the DNS rewrite redirects client name resolution toward attacker-controlled infrastructure.

The record

CVE
CVE-2018-25317
Published
Apr 29, 2026
Updated
Apr 29, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
W3002R
Classifications
CWE-290, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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=5.07.64

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · W3002Rversion=5.07.64

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1190Exploit Public-Facing Application

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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