Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Tenda
  • A302
  • A302 Firmware
  • W3002r
  • W3002r Firmware
  • W309r
  • W309r Firmware

Configuration 1 [-]

AND
cpe:2.3:o:tenda:w3002r_firmware:5.07.64_en:*:*:*:*:*:*:*
cpe:2.3:h:tenda:w3002r:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND
cpe:2.3:o:tenda:a302_firmware:5.07.64_en:*:*:*:*:*:*:*
cpe:2.3:h:tenda:a302:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND
cpe:2.3:o:tenda:w309r_firmware:5.07.64_en:*:*:*:*:*:*:*
cpe:2.3:h:tenda:w309r:-:*:*:*:*:*:*:*

No data.

References
Link Providers
https://www.exploit-db.com/exploits/44380 cve-icon cve-icon
https://www.vulncheck.com/advisories/tenda-w3002r-a302-w309r-64-en-cookie-session-weakness-dns-change cve-icon cve-icon
History

Tue, 05 May 2026 03:00:00 +0000

Type Values Removed Values Added
First Time appeared Tenda a302
Tenda a302 Firmware
Tenda w3002r Firmware
Tenda w309r
Tenda w309r Firmware
CPEs cpe:2.3:h:tenda:a302:-:*:*:*:*:*:*:*
cpe:2.3:h:tenda:w3002r:-:*:*:*:*:*:*:*
cpe:2.3:h:tenda:w309r:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:a302_firmware:5.07.64_en:*:*:*:*:*:*:*
cpe:2.3:o:tenda:w3002r_firmware:5.07.64_en:*:*:*:*:*:*:*
cpe:2.3:o:tenda:w309r_firmware:5.07.64_en:*:*:*:*:*:*:*
Vendors & Products Tenda a302
Tenda a302 Firmware
Tenda w3002r Firmware
Tenda w309r
Tenda w309r Firmware

Thu, 30 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 30 Apr 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Tenda
Tenda w3002r
Vendors & Products Tenda
Tenda w3002r

Wed, 29 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
Description Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.
Title Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-04-29T19:24:45.523Z

Updated: 2026-04-30T14:11:11.561Z

Reserved: 2026-04-29T12:27:08.662Z

Link: CVE-2018-25317

cve-icon Vulnrichment

Updated: 2026-04-30T14:10:50.286Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-29T20:16:27.663

Modified: 2026-05-05T02:46:59.470

Link: CVE-2018-25317

cve-icon Redhat

No data.