Is this vulnerability remotely exploitable?

Yes. If the FLIP login page is reachable over the network—especially if it is internet-facing—an attacker can remotely perform high-volume login attempts without needing any prior access.

What level of access does an attacker need to exploit this issue?

Only network access to the authentication endpoint is required. The attacker does not need a valid account or any special permissions to begin brute-force or credential-stuffing attacks.

What is the safest general fix pattern for this vulnerability?

The most robust approach is to combine multiple layers of protection: implement per-account and per-IP rate limiting, introduce progressive delays or temporary lockouts after repeated failures, and add human verification (such as CAPTCHAs or step-up authentication) for suspicious login patterns. Where possible, delegating authentication to a hardened identity provider that enforces these controls by default can simplify implementation.

Severity:

CRITICAL RISK

(9.8)

Improper Brute Force Protection (CWE-307) on FLIP Authentication Endpoint

CVE-2026-33879

Published:

Mar 27, 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

Recent Vulnerabilities

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Improper Brute Force Protection

CWE:

CWE-307

Impact:

Account Takeover and Unauthorized Access

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Brute Force Protection

CWE:

CWE-307

Impact:

Account Takeover and Unauthorized Access

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Improper Brute Force Protection (CWE-307) on FLIP Authentication Endpoint

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

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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