CVE-2018-25318CWE-290

Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change

Critical · published April 29, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
50.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.00651 · 50.3th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-04-29T19:24Z
EPSS history
Timeline
  • 29 APR 19:24Z
    Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change
    cvelistv5