Home/CVE/A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the com
CVE

CVE-2026-4252

A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the com

A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the component IPv6 Handler. The manipulation leads to reliance on ip address for authentication.

It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

CRITICAL · CVSS 9.8 EPSS 0.00387
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-291Reliance on IP Address for Authentication
▤

Affected Products & Versions

1
tenda ac8 firmwareall versions
⚠

Public Exploits & PoCs

2
pocgithub.com · poc_ipv6_auth_bypass.pygithub.com
pocvuldb.com · ?submit.771759vuldb.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Mar 2026 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://vuldb.com/?ctiid.351210Permissions RequiredVDB Entry
https://vuldb.com/?id.351210Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/Product
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