CVE-2018-25318Critical· 9.8▾ AbyssalPoC available

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

▾ Abyssal zone — Critical with a public exploit or in-the-wild use

Depth score66/ 100 · Elevated

impact 53.9 · likelihood 0.1 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

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Published

Apr 29, 2026

Updated

Oct 1, 2026

CVSS

9.8

Vendor

Tenda

Product

FH303/A300

CWE

CWE-290

Depth score

66 · Elevated

EPSS

0.65% · p49

Platforms

—

Source

CVEORG

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

decided 2026-04-30

Exploitation: poc
Automatable: yes
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 155 days

Apr 29, 2026Published
Disclosed via CVEORG
Oct 1, 2026Record revised
Last analysed / modified upstream
Oct 1, 2026EPSS first tracked
0.7%

Tenda CWE-290 #cve.org #exploit-available

Affected

FH303/A300 5.07.68

Full technical detail▾

Overview

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.

Affected

FH303/A300 5.07.68

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org#exploit-available