CVE-2025-13373: Advantech iView SQL Injection Vulnerability

CVE-2025-13373 Overview

CVE-2025-13373 is a SQL Injection vulnerability affecting Advantech iView, a network management solution commonly deployed in industrial and operational technology (OT) environments. The vulnerability exists in versions 5.7.05.7057 and prior, where SNMP v1 trap requests on Port 162 are not properly sanitized, enabling attackers to inject malicious SQL commands.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability over the network to potentially extract sensitive data from the underlying database, compromise device management operations, and gain unauthorized access to critical industrial network infrastructure.

Affected Products

• Advantech iView version 5.7.05.7057
• Advantech iView versions prior to 5.7.05.7057
• Industrial network management deployments using vulnerable iView instances

Discovery Timeline

• 2025-12-04 - CVE-2025-13373 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-13373

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The flaw resides in the SNMP v1 trap handling mechanism of Advantech iView, which listens on UDP port 162 for incoming trap notifications.

When the iView application processes SNMP v1 trap requests, it fails to properly sanitize user-controllable data within the trap payload before incorporating it into SQL queries. This lack of input validation allows an attacker to craft malicious SNMP trap messages containing SQL injection payloads that are subsequently executed against the backend database.

The network-accessible nature of this vulnerability is particularly concerning in industrial control system (ICS) environments, where iView is commonly deployed for centralized monitoring and management of industrial network devices. Successful exploitation could lead to unauthorized data extraction, manipulation of device configurations, or disruption of monitoring capabilities.

Root Cause

The root cause of CVE-2025-13373 is insufficient input sanitization in the SNMP v1 trap processing code. When trap data is received on port 162, the application constructs SQL queries using trap parameters without implementing parameterized queries or proper escaping mechanisms. This allows special SQL characters and commands embedded in trap payloads to be interpreted as executable SQL code rather than literal data.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker with network access to the iView server's SNMP trap port (UDP 162) can send specially crafted SNMP v1 trap messages containing SQL injection payloads in trap variable bindings or other controllable fields.

The attacker constructs an SNMP v1 trap packet with malicious SQL syntax embedded within trap data fields such as the enterprise OID, agent address, or variable bindings. When iView processes this trap and attempts to log or store the trap information, the injected SQL commands execute within the database context. Depending on database permissions and configuration, this could enable data exfiltration, data modification, or in some cases, command execution on the underlying system.

Detection Methods for CVE-2025-13373

Indicators of Compromise

• Anomalous SNMP v1 trap traffic targeting port 162 from unexpected sources
• SQL error messages in iView application logs indicating query syntax errors
• Unusual database queries or access patterns in database audit logs
• Evidence of data exfiltration or unauthorized database modifications
• SNMP trap payloads containing SQL keywords such as UNION, SELECT, INSERT, or comment sequences

Detection Strategies

• Monitor UDP port 162 traffic for SNMP trap packets containing suspicious strings or SQL syntax patterns
• Implement database query logging and analyze for injection patterns or anomalous queries originating from the iView application
• Deploy network intrusion detection rules to identify SNMP packets with SQL injection signatures
• Review iView application logs for repeated error messages or unusual processing failures

Monitoring Recommendations

• Establish baseline SNMP trap traffic patterns and alert on deviations
• Configure SIEM rules to correlate SNMP traffic anomalies with database access events
• Enable verbose logging on the iView application and underlying database for forensic analysis
• Monitor for reconnaissance activity targeting the SNMP trap service

How to Mitigate CVE-2025-13373

Immediate Actions Required

• Apply the latest firmware update from Advantech that addresses this vulnerability
• Restrict network access to UDP port 162 using firewall rules, limiting SNMP trap sources to trusted network management systems only
• Implement network segmentation to isolate iView servers from untrusted network segments
• Review database permissions to ensure the iView application operates with least-privilege access

Patch Information

Advantech has released firmware updates to address this vulnerability. Administrators should download and apply the latest firmware from the Advantech Firmware Support page. Additional advisory details are available in the CISA ICS Advisory ICSA-25-338-07 and the CISA CSAF advisory file.

Workarounds

• Implement firewall rules to restrict SNMP trap traffic (UDP 162) to known, trusted sources only
• Deploy a network-based intrusion prevention system (IPS) to filter malicious SNMP traffic
• Consider disabling SNMP v1 trap processing if not operationally required, as SNMPv3 provides stronger security
• Use database-level controls such as stored procedures with parameterized inputs as an additional defense layer
• Segment the iView server onto a dedicated management network isolated from general user traffic

# Example firewall rule to restrict SNMP trap sources (Linux iptables)
# Allow SNMP traps only from trusted management network 192.168.10.0/24
iptables -A INPUT -p udp --dport 162 -s 192.168.10.0/24 -j ACCEPT
iptables -A INPUT -p udp --dport 162 -j DROP