Description
Tenda FH303/A300 firmware V5.07.68_EN contains a session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient cookie validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin cookie to change DNS servers and redirect user traffic to malicious sites.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Tenda | FH303/A300 | 5.07.68 |
References
- https://www.exploit-db.com/exploits/44381Exploit, Third Party Advisory, VDB Entry
- https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-changeThird Party Advisory
Timeline
- Published
- Apr 29, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed