CVE-2018-25318

critical · 9.3

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.

9.3

CVSS

0.7%

EPSS (exploit prob.)

50th

EPSS percentile

2026-04-29

Published

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-290

Affected products

Vendor	Product	Affected versions
tenda	fh303_firmware	5.07.68_en
tenda	fh303	all versions
tenda	a300_firmware	5.07.68_en
tenda	a300	all versions

Check a specific version with /api/v1/cve/match.

References

https://www.exploit-db.com/exploits/44381
https://www.vulncheck.com/advisories/tenda-fh303-a300-68-en-cookie-session-weakness-dns-change

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2018-25318