CVE-2025-11949: EasyFlow Authentication Bypass Flaw

CVE-2025-11949 Overview

CVE-2025-11949 is a Missing Authentication vulnerability affecting EasyFlow .NET and EasyFlow AiNet, enterprise workflow automation solutions developed by Digiwin. This vulnerability allows unauthenticated remote attackers to obtain database administrator credentials via a specific functionality, potentially leading to complete database compromise and unauthorized access to sensitive business data.

Critical Impact

Unauthenticated attackers can remotely extract database administrator credentials, enabling full database access and potential lateral movement within the organization's network infrastructure.

Affected Products

• EasyFlow .NET (Digiwin)
• EasyFlow AiNet (Digiwin)

Discovery Timeline

• 2025-10-21 - CVE-2025-11949 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-11949

Vulnerability Analysis

This vulnerability is classified as CWE-306: Missing Authentication for Critical Function. The EasyFlow .NET and EasyFlow AiNet applications expose a specific functionality that returns database administrator credentials without requiring any form of authentication. This architectural flaw allows network-accessible attackers to directly query the vulnerable endpoint and retrieve highly sensitive credentials that provide administrative access to the underlying database system.

The network-accessible nature of this vulnerability means that any attacker who can reach the application over the network can exploit it without needing valid credentials or prior access to the system. The impact is severe as obtaining database administrator credentials typically grants full control over all data stored in the database, including the ability to read, modify, or delete records, as well as potentially execute commands on the database server.

Root Cause

The root cause of CVE-2025-11949 is a missing authentication mechanism on a critical application functionality. The affected EasyFlow components fail to verify whether incoming requests are from authenticated and authorized users before returning sensitive database configuration information, including administrator credentials. This represents a fundamental security design flaw where authentication controls were either not implemented or were bypassed for this specific functionality.

Attack Vector

The attack vector is network-based and requires no authentication, user interaction, or special privileges. An attacker can exploit this vulnerability by:

1. Identifying a vulnerable EasyFlow .NET or EasyFlow AiNet instance accessible over the network
2. Sending a request to the specific unauthenticated functionality
3. Receiving database administrator credentials in the response
4. Using the obtained credentials to access the database with full administrative privileges

The vulnerability can be exploited remotely, making it particularly dangerous for organizations with internet-facing EasyFlow deployments or in environments where network segmentation is insufficient.

Detection Methods for CVE-2025-11949

Indicators of Compromise

• Unexpected or unauthorized access attempts to database systems using administrator credentials
• Unusual network traffic patterns to EasyFlow application endpoints from external or untrusted sources
• Database authentication logs showing successful administrator logins from unexpected IP addresses
• Evidence of credential harvesting activities targeting EasyFlow functionality

Detection Strategies

• Monitor EasyFlow application access logs for requests to the vulnerable functionality from unauthenticated sessions
• Implement network intrusion detection rules to identify patterns consistent with credential extraction attempts
• Audit database access logs for unusual administrator authentication events following EasyFlow access
• Deploy web application firewalls (WAF) with rules to detect and block suspicious requests to EasyFlow endpoints

Monitoring Recommendations

• Enable comprehensive logging on EasyFlow applications and forward logs to a centralized SIEM solution
• Establish baseline network behavior for EasyFlow applications and alert on anomalies
• Monitor database administrator account activity for signs of unauthorized access or credential misuse
• Implement real-time alerting for successful database authentications from non-standard sources

How to Mitigate CVE-2025-11949

Immediate Actions Required

• Restrict network access to EasyFlow .NET and EasyFlow AiNet applications to trusted networks only
• Implement network segmentation to isolate EasyFlow systems from untrusted network zones
• Rotate all database administrator credentials that may have been exposed
• Audit database access logs to identify any unauthorized access using compromised credentials
• Consider temporarily disabling the vulnerable functionality until a patch is applied

Patch Information

Organizations should consult the TW CERT Security Advisory and TW CERT Security Announcement for official guidance from the Taiwan CERT regarding available patches and remediation steps from Digiwin.

Workarounds

• Deploy a reverse proxy or web application firewall in front of EasyFlow applications to enforce authentication before requests reach the vulnerable functionality
• Implement IP allowlisting to restrict access to EasyFlow applications to known, trusted IP addresses only
• Use network-level access controls (firewalls, VPNs) to limit who can reach the EasyFlow application
• Configure database systems to require additional authentication factors or source IP restrictions for administrator accounts

# Example: Restrict network access to EasyFlow using firewall rules
# Allow only trusted management network to access EasyFlow
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP