Digiwin EasyFlow .NET SQL Injection Vulnerability (CVE-2026-5963)

Digiwin EasyFlow .NET is susceptible to a critical SQL Injection vulnerability (CVE-2026-5963). This flaw allows unauthenticated remote attackers to inject arbitrary SQL commands directly into the application’s database queries. The vulnerability allows attackers to read, modify, or delete sensitive data within the EasyFlow .NET database, potentially leading to complete compromise of the application and its underlying data. Given the nature of SQL injection, this vulnerability could be exploited by attackers with minimal technical knowledge, making it a significant threat to organizations using EasyFlow .NET. The vulnerability was disclosed on April 20, 2026, and immediate patching or mitigation is strongly advised.

Attack Chain

1. An unauthenticated attacker identifies a vulnerable EasyFlow .NET endpoint exposed to the internet.
2. The attacker crafts a malicious HTTP request containing a SQL injection payload within a parameter expected by the endpoint.
3. The EasyFlow .NET application fails to properly sanitize or validate the input, passing the malicious SQL query to the database.
4. The database executes the attacker-controlled SQL query.
5. The attacker extracts sensitive data from the database by using UNION SELECT statements, potentially revealing usernames, passwords, or confidential business information.
6. Alternatively, the attacker modifies data within the database using UPDATE statements, potentially altering application configuration or user privileges.
7. The attacker deletes data from the database using DELETE statements, potentially causing denial-of-service or data loss.
8. The attacker achieves complete control over the EasyFlow .NET application and its data, potentially using this access to pivot to other internal systems.

Impact

Successful exploitation of this vulnerability allows unauthenticated attackers to read, modify, or delete arbitrary data within the EasyFlow .NET database. This can lead to the exposure of sensitive customer information, financial data, or intellectual property. Attackers could also modify application configurations, escalate privileges, or cause a complete denial of service. Given the critical nature of business process management applications like EasyFlow, a successful attack could result in significant financial losses, reputational damage, and regulatory penalties.

Recommendation

• Apply the security patch or update provided by Digiwin to address CVE-2026-5963.
• Implement strong input validation and sanitization techniques on all user-supplied data within EasyFlow .NET to prevent SQL injection attacks, referencing CWE-89.
• Deploy the Sigma rule “Detect Suspicious SQL Injection Attempts in Web Logs” to monitor for exploitation attempts against EasyFlow .NET web server logs.
• Monitor network traffic for suspicious database activity originating from EasyFlow .NET servers.
• Review and restrict database user privileges to follow the principle of least privilege.