Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change
Priority HIGH 81CWE-290Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-290.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00651 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Tenda | FH303/A300 | 5.07.68 | — | No fix listed | CNA |
- FH303/A300 VendorTenda Affected 5.07.68 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:tenda:fh303_firmware:5.07.68_en:*:*:*:*:*:*:* | 5.07.68_en | Vulnerable | Tenda |
| cpe:2.3:h:tenda:fh303:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tenda |
| cpe:2.3:o:tenda:a300_firmware:5.07.68_en:*:*:*:*:*:*:* | 5.07.68_en | Vulnerable | Tenda |
| cpe:2.3:h:tenda:a300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tenda |
- cpe:2.3:o:tenda:fh303_firmware:5.07.68_en:*:*:*:*:*:*:* Versions 5.07.68_en Vulnerable ·Tenda
- cpe:2.3:h:tenda:fh303:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda
- cpe:2.3:o:tenda:a300_firmware:5.07.68_en:*:*:*:*:*:*:* Versions 5.07.68_en Vulnerable ·Tenda
- cpe:2.3:h:tenda:a300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-25318
- 2026-10-03 Alias added: GHSA-j5r6-25m9-65r7
- 2026-10-16 EPSS moved to the 50th–90th percentile
References
Exploit 1
Sources
- CVE-2018-25318 · CVE Program
- CVE-2018-25318 · NVD
- FIRST EPSS
- GHSA-j5r6-25m9-65r7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences