CVE-2025-3709: CVE-2025-3709: Critical Account Lockout Bypass in Flowring Agentflow 4.0

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CVE-2025-3709: Critical Account Lockout Bypass in Flowring Agentflow 4.0

Vulnerability ID: CVE-2025-3709
CVSS Score: 9.8
Published: 2025-05-02

CVE-2025-3709 is a critical account lockout bypass vulnerability (CWE-307) affecting Flowring Technology Agentflow version 4.0. This flaw allows unauthenticated remote attackers to perform unlimited password brute-force attacks against the authentication system, bypassing security controls designed to lock accounts after excessive failed attempts.

TL;DR

A critical CWE-307 flaw in Agentflow 4.0 allows unauthenticated remote attackers to bypass account lockout mechanisms. This enables unlimited password brute-force attacks, posing a severe risk of account takeover and compromise of enterprise business process management workflows.

⚠️ Exploit Status: POC

Technical Details

CWE ID: CWE-307
Attack Vector: Network
CVSS v3.1: 9.8
EPSS Score: 0.00282
Impact: Account Takeover
Exploit Status: POC

Affected Systems

Flowring Technology Agentflow 4.0
Agentflow: 4.0

Mitigation Strategies

Apply the official vendor patch from Flowring Technology
Implement WAF rate-limiting on all authentication endpoints
Enforce Multi-Factor Authentication (MFA) via external gateway
Restrict application access using network segmentation or VPN

Remediation Steps:

Log in to the Flowring CRM portal using administrative credentials.
Download the security update specifically designated for Agentflow version 4.0.
Apply the patch to the application server during a scheduled maintenance window.
Verify the remediation by attempting 6 consecutive invalid logins to confirm the account correctly locks.
Configure edge security devices (WAF/Load Balancer) to rate-limit HTTP POST requests directed at authentication URIs.

References

Read the full report for CVE-2025-3709 on our website for more details including interactive diagrams and full exploit analysis.

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