CVE-2026-4252

Name: CVE-2026-4252
Creator: NVD / NIST
Published: 2026-03-16T17:16:32.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.9/10EPSS 1.26%

Last modified Jun 17, 2026

CVE-2026-4252 is a high-severity vulnerability rated 8.9/10 on the CVSS scale. 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. EPSS estimates a 1.26% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

8.9/10

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/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

EPSS Probability

1.26%

65.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tenda	Ac8 Firmware	16.03.50.11

References

https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_ipv6_auth_bypass.pyExploit
https://vuldb.com/?ctiid.351210Permissions Required, VDB Entry
https://vuldb.com/?id.351210Third Party Advisory, VDB Entry
https://vuldb.com/?submit.771759Exploit, Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product

Timeline

Published: Mar 16, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-4252?

How severe is CVE-2026-4252?

CVE-2026-4252 has a CVSS score of 8.9/10 (HIGH severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.

How do I fix CVE-2026-4252?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-4252?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST