CVE-2026-4252
Tenda AC8 IPv6 check_is_ipv6 ip address for authentication
- State
- Published
- Severity
- 9.3 Critical
- Published
- Mar 16, 2026
- Updated
- Mar 16, 2026
- Reserved
- Mar 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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/E:P | VulDB |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R | VulDB |
| 3.0 | 9.8 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R | VulDB |
| 2.0 | 10.0 High | AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:W/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
AC8Tenda |
|
References
- VDB-351210 | Tenda AC8 IPv6 check_is_ipv6 ip address for authenticationvdb-entrytechnical-description
- VDB-351210 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #771759 | Tenda AC8 V5 V16.03.50.11 Authentication Bypass Issuesthird-party-advisory
- https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_ipv6_auth_bypass.pyexploit
- https://www.tenda.com.cn/product
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