CVE-2018-25317

CRITICAL

Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-25317. PoCs published by Todor Donev.

AI-analyzed exploit summary This PoC exploits a cookie session weakness in Tenda routers to remotely change DNS settings via a crafted HTTP request. The vulnerability allows unauthenticated attackers to modify DNS configurations, redirecting users to malicious sites.

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.

Exploits (1)

exploitdb WORKING POC
by Todor Donev · textwebappsasp
https://www.exploit-db.com/exploits/44380

This PoC exploits a cookie session weakness in Tenda routers to remotely change DNS settings via a crafted HTTP request. The vulnerability allows unauthenticated attackers to modify DNS configurations, redirecting users to malicious sites.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: Tenda W3002R/A302/w309r Wireless Router V5.07.64_en
No auth needed
Prerequisites: network access to the target router
devstral-2 · analyzed Apr 30, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit exploit
ExploitDB-44380
https://www.exploit-db.com/exploits/44380
Third Party Advisory third-party-advisory
VulnCheck Advisory: Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change
https://www.vulncheck.com/advisories/tenda-w3002r-a302-w309r-64-en-cookie-session-weakness-dns-change

Scores

CVSS v3 9.8
EPSS 0.0065
EPSS Percentile 46.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-290
Status published
Products (4)
tenda/a302_firmware 5.07.64_en
Tenda/W3002R 5.07.64
tenda/w3002r_firmware 5.07.64_en
tenda/w309r_firmware 5.07.64_en
Published Apr 29, 2026
Tracked Since Apr 30, 2026