CVE-2026-4252

CRITICAL 9.8

Tenda AC8 IPv6 check_is_ipv6 ip address for authentication

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-291 CWE-287
Vendor	tenda
Product	ac8
Published	Mar 16, 2026
Last Updated	Mar 16, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Tenda / AC8

16.03.50.11

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.351210 vuldb.com: https://vuldb.com/?ctiid.351210 vuldb.com: https://vuldb.com/?submit.771759 github.com: https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_ipv6_auth_bypass.py tenda.com.cn: https://www.tenda.com.cn/

Credits

🔍 DigitalAndrew (VulDB User)