Is this vulnerability remotely exploitable?

Yes. As described, the weakness can be triggered remotely when an attacker can reach the IPv6-exposed functionality on the router. Public exploit code reportedly exists, which may lower the skill barrier for exploitation.

What level of access does an attacker need?

The attacker generally needs network-level access to communicate with the router over IPv6. They do not necessarily require valid credentials if they can manipulate or appear to originate from a "trusted" IP context relied upon by the vulnerable check.

What is the safest general fix pattern?

The most robust fix is to remove IP address as an authentication factor and require proper, credential-based authentication for all privileged actions, enforced consistently across IPv4 and IPv6 paths. Access control should be based on validated user sessions and roles, not network-layer attributes.

Severity:

CRITICAL RISK

(9.8)

IP Address-Based Authentication Bypass (CWE-287) in Tenda AC8 IPv6 Handler

CVE-2026-4252

Published:

Mar 16, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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May 6, 2026

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HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287;CWE-291

Impact:

Unauthorized Remote Access

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287;CWE-291

Impact:

Unauthorized Remote Access

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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IP Address-Based Authentication Bypass (CWE-287) in Tenda AC8 IPv6 Handler

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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