CVE-2018-25318: Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change

Published Apr 29, 2026

Updated

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 Software

5 affected components

Tenda FH303/A300 firmware=V5.07.68_EN

All of the following

Tenda Fh303 Firmware=5.07.68_en

Tenda FH303

All of the following

Tenda A300 firmware=5.07.68_en

Tenda A300

Event History

Apr 29, 2026

CVE Published

via MITRE·07:24 PM

Data Sourced

via MITRE·07:24 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·08:16 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2018-25318?

CVE-2018-25318 has been classified as a high severity vulnerability due to its potential risk of unauthorized DNS changes.

How do I fix CVE-2018-25318?

Fixing CVE-2018-25318 requires upgrading the Tenda FH303/A300 firmware to a version that addresses the cookie session weakness.

What type of vulnerability is CVE-2018-25318?

CVE-2018-25318 is a cookie session weakness vulnerability that affects Tenda FH303/A300 firmware.

Who is affected by CVE-2018-25318?

Users of Tenda FH303/A300 firmware version V5.07.68_EN are affected by CVE-2018-25318.

What can attackers do with CVE-2018-25318?

Attackers exploiting CVE-2018-25318 can modify DNS settings without authentication.

Company

Resources

Contact

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