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 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.

CVSS v4.0

8.9 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

1.26% chance of exploitation in the next 30 days, 68th percentile

Published

2026-03-16

Proof-of-concept exploits (1)

• digitalandrew/tenda_ac8_v5/blob/main/poc_ipv6_auth_bypass.py

References

• CVE Record
• NVD entry

Related

• CVE-2026-4253
• CVE-2026-4254
• CVE-2026-4251
• CVE-2026-42527
• CVE-2026-4250
• CVE-2026-42471