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.
Published: 2026-04-29
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 04 May 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Tenda a300
Tenda a300 Firmware
Tenda fh303
Tenda fh303 Firmware
CPEs cpe:2.3:h:tenda:a300:-:*:*:*:*:*:*:*
cpe:2.3:h:tenda:fh303:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:a300_firmware:5.07.68_en:*:*:*:*:*:*:*
cpe:2.3:o:tenda:fh303_firmware:5.07.68_en:*:*:*:*:*:*:*
Vendors & Products Tenda a300
Tenda a300 Firmware
Tenda fh303
Tenda fh303 Firmware

Thu, 30 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 30 Apr 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Tenda
Tenda fh303/a300
Vendors & Products Tenda
Tenda fh303/a300

Wed, 29 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
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.
Title Tenda FH303/A300 V5.07.68_EN Cookie Session Weakness DNS Change
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, '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'}


Subscriptions

Tenda A300 A300 Firmware Fh303 Fh303/a300 Fh303 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-30T15:22:22.014Z

Reserved: 2026-04-29T12:27:37.000Z

Link: CVE-2018-25318

cve-icon Vulnrichment

Updated: 2026-04-30T13:13:41.414Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-29T20:16:27.800

Modified: 2026-05-04T18:40:04.290

Link: CVE-2018-25318

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-30T14:00:22Z

Weaknesses