CVE-2025-12503 Overview
CVE-2025-12503 is a SQL Injection vulnerability [CWE-89] affecting Digiwin EasyFlow .NET and EasyFlow AiNet. Authenticated remote attackers can inject arbitrary SQL commands to read database contents through the affected application interfaces. The flaw stems from improper neutralization of user-supplied input used in SQL statements. Successful exploitation exposes sensitive business workflow data, user records, and configuration information stored in the backend database. Taiwan's TW-CERT published advisories detailing the issue and coordinated disclosure with Digiwin.
Critical Impact
Authenticated attackers with low privileges can extract arbitrary database contents from EasyFlow .NET and EasyFlow AiNet deployments over the network, exposing confidential enterprise workflow and user data.
Affected Products
- Digiwin EasyFlow .NET
- Digiwin EasyFlow AiNet
- Deployments integrating EasyFlow workflow components
Discovery Timeline
- 2025-11-03 - CVE-2025-12503 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-12503
Vulnerability Analysis
The vulnerability is a classic SQL Injection flaw categorized under CWE-89: Improper Neutralization of Special Elements used in an SQL Command. EasyFlow .NET and EasyFlow AiNet accept parameters from authenticated users and concatenate them into SQL queries without adequate sanitization or parameterized binding. An attacker holding valid low-privilege credentials can send crafted input through the application's network-exposed endpoints. The injected payload is executed by the backend database engine. This grants read access to arbitrary tables, including data outside the user's intended authorization scope.
Root Cause
The root cause is unsafe construction of SQL queries using concatenated string input from authenticated session parameters. The application does not use prepared statements, parameterized queries, or strict input validation against SQL metacharacters. Any field reachable through the authenticated interface that reaches a vulnerable query path becomes an injection point.
Attack Vector
Exploitation requires network access and valid credentials to the EasyFlow application. The attacker submits crafted request parameters containing SQL syntax such as union-based or boolean-based payloads. The database processes the manipulated query and returns results that disclose contents from other tables. No user interaction is required beyond the attacker's own authenticated session. Refer to the TW-CERT Security Advisory and the TW-CERT Incident Report for coordinated disclosure details.
Detection Methods for CVE-2025-12503
Indicators of Compromise
- Web server or application logs showing SQL metacharacters such as single quotes, UNION SELECT, --, /*, or 0x encodings in authenticated request parameters.
- Unexpected database errors or extended query execution times tied to specific user sessions.
- Authenticated users issuing high volumes of requests to EasyFlow endpoints that normally receive few requests.
- Database audit logs showing queries referencing tables outside the application's documented data model.
Detection Strategies
- Deploy signature and behavior rules in the web application firewall tuned for SQL Injection patterns targeting EasyFlow URIs.
- Correlate authentication telemetry with request anomalies to identify compromised low-privilege accounts probing injection points.
- Enable database query auditing and alert on queries that return large row counts to the EasyFlow service account.
Monitoring Recommendations
- Centralize EasyFlow application, IIS, and database logs for retention and query analysis.
- Baseline normal query patterns and alert on deviations such as new table references or union operators.
- Monitor outbound traffic from EasyFlow hosts for data exfiltration following suspicious database read activity.
How to Mitigate CVE-2025-12503
Immediate Actions Required
- Apply the Digiwin-provided security update for EasyFlow .NET and EasyFlow AiNet as referenced in the TW-CERT advisory.
- Restrict network access to EasyFlow interfaces to trusted internal segments and VPN users only.
- Rotate credentials for EasyFlow user and service accounts and review account privileges.
- Audit database and application logs for prior exploitation attempts dating back before the patch date.
Patch Information
Digiwin has coordinated with Taiwan's TW-CERT to release fixed versions of EasyFlow .NET and EasyFlow AiNet. Administrators should consult the TW-CERT Security Advisory and contact Digiwin support for the specific patched build applicable to their deployment. Apply the update across all production, staging, and disaster-recovery instances.
Workarounds
- Place EasyFlow endpoints behind a web application firewall with SQL Injection rule sets enabled in blocking mode.
- Enforce least-privilege database accounts for the EasyFlow service so compromised queries cannot read unrelated schemas.
- Disable or restrict unused EasyFlow modules and parameters that are not required for business operations until patching is complete.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
