Vulnerability in Tenda A302
CVE-2018-25317
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (49.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Tenda A302
- Tenda A302 Firmware — versions 5.07.64_en
- Tenda W3002r — versions 5.07.64
- Tenda W3002r Firmware — versions 5.07.64_en
- Tenda W309r
- Tenda W309r Firmware — versions 5.07.64_en
Weakness classification (CWE)
References
- ExploitDB-44380 (Exploit, exploit, Third Party Advisory, VDB Entry)
- VulnCheck Advisory: Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25317?
- CVE-2018-25317 is a critical-severity vulnerability in Tenda A302, classified under Authentication Bypass by Spoofing. CVSS score: 9.8/10. Published 2026-04-29.
- How severe is CVE-2018-25317?
- Critical severity. CVSS v3 base score is 9.8 out of 10.