CVE-2018-25318

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/44381	Exploit Third Party Advisory VDB Entry
https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-change	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:fh303_firmware:5.07.68_en:*:*:*:*:*:*:*

cpe:2.3:h:tenda:fh303:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:tenda:a300_firmware:5.07.68_en:*:*:*:*:*:*:*

cpe:2.3:h:tenda:a300:-:*:*:*:*:*:*:*

History

04 May 2026, 18:40

Type	Values Removed	Values Added
First Time		Tenda fh303 Firmware Tenda fh303 Tenda a300 Tenda Tenda a300 Firmware
CPE		cpe:2.3:h:tenda:fh303:-:::::::* cpe:2.3:o:tenda:a300_firmware:5.07.68_en:::::::* cpe:2.3:o:tenda:fh303_firmware:5.07.68_en:::::::* cpe:2.3:h:tenda:a300:-:::::::*
References	~~() https://www.exploit-db.com/exploits/44381 -~~	() https://www.exploit-db.com/exploits/44381 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-change -~~	() https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-change - Third Party Advisory

30 Apr 2026, 15:11

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-29 20:16

Updated : 2026-06-17 01:55

NVD link : CVE-2018-25318

Mitre link : CVE-2018-25318

CVE.ORG link : CVE-2018-25318

JSON object : View

Products Affected

tenda

fh303_firmware
a300_firmware
fh303
a300

CWE

CWE-290

Authentication Bypass by Spoofing

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