# CVE-2018-25318

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## Description

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.

## Key facts

- **CVE ID:** CVE-2018-25318
- **Published:** 2026-04-29
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-290

## Affected products

- `tenda:fh303_firmware`
- `tenda:fh303`
- `tenda:a300_firmware`
- `tenda:a300`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25318

## Citation

> AI Analytics. CVE-2018-25318. Retrieved 2026-07-11 from https://api.ai-analytics.org/cve/CVE-2018-25318. Derived from NIST NVD. Licensed CC0.

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