CVE-2026-40832 Overview
CVE-2026-40832 is a SQL injection vulnerability in the getDevicegroups function. The function fails to properly neutralize special elements passed into a SQL SELECT statement. A remote attacker with low privileges can inject arbitrary SQL syntax through this code path and read data from the backend database.
The issue is tracked under CWE-89: Improper Neutralization of Special Elements used in an SQL Command. Successful exploitation leads to a total loss of confidentiality of the affected database contents. The vulnerability was disclosed through CERT-VDE Advisory VDE-2026-044, which coordinates disclosures for industrial and operational technology vendors.
Critical Impact
A remote attacker with low-level credentials can extract sensitive database records by injecting SQL into the getDevicegroups function, resulting in full confidentiality loss.
Affected Products
- Product details have not been published in the National Vulnerability Database entry.
- Affected vendor and version information is coordinated through CERT-VDE Advisory VDE-2026-044.
- Refer to the CERT-VDE advisory for the authoritative list of impacted devices and firmware versions.
Discovery Timeline
- 2026-05-27 - CVE-2026-40832 published to NVD
- 2026-05-27 - Last updated in NVD database
Technical Details for CVE-2026-40832
Vulnerability Analysis
The vulnerability resides in the getDevicegroups function, which builds a SQL SELECT statement using attacker-controlled input. Because special characters such as single quotes, semicolons, and SQL comment sequences are not neutralized, an attacker can break out of the intended query context. Injected SQL fragments are executed against the backend database with the privileges of the application user.
The NVD record classifies this issue as [CWE-89]. Despite the description noting an "unauthenticated" injection, the attack vector still requires low privileges according to the published metrics. The impact is scoped to confidentiality, indicating the attacker can read data but the integrity and availability of the database remain intact at the vector level.
Root Cause
The root cause is direct concatenation or unsafe interpolation of untrusted input into a SQL query string. The getDevicegroups function does not use parameterized queries or prepared statements. Input validation routines, if present, fail to strip or escape SQL metacharacters before the query reaches the database engine.
Attack Vector
The attack is delivered over the network against an exposed application endpoint that invokes getDevicegroups. An attacker submits a crafted request containing SQL syntax in a parameter consumed by the function. The injected payload alters the resulting SELECT statement, typically through UNION-based or boolean-based techniques, to exfiltrate rows the attacker is not authorized to view.
No verified proof-of-concept exploit has been published. Technical details are restricted to the CERT-VDE Advisory VDE-2026-044.
Detection Methods for CVE-2026-40832
Indicators of Compromise
- Application or web server logs containing SQL metacharacters such as ', --, ;, UNION SELECT, or OR 1=1 in parameters routed to getDevicegroups.
- Database query logs showing unusually long SELECT statements or queries returning large result sets from device group tables.
- Repeated HTTP requests from a single source against the endpoint that backs getDevicegroups.
Detection Strategies
- Enable database audit logging and alert on syntactically anomalous queries originating from the application service account.
- Deploy a Web Application Firewall rule set with SQL injection signatures in front of the affected management interface.
- Correlate authentication events with subsequent database errors to identify low-privileged accounts probing the getDevicegroups code path.
Monitoring Recommendations
- Monitor for HTTP 500 responses and database errors emitted by the application following requests that include device group parameters.
- Track outbound data volume from the database server to detect bulk extraction following injection attempts.
- Review accounts with low privileges that successfully authenticate and then issue requests to administrative endpoints.
How to Mitigate CVE-2026-40832
Immediate Actions Required
- Apply the firmware or software update referenced in CERT-VDE Advisory VDE-2026-044 as soon as it is available for your deployment.
- Restrict network access to the affected management interface to trusted administrative networks only.
- Audit and rotate credentials for any low-privileged accounts that could reach the vulnerable endpoint.
Patch Information
Vendor-supplied patch details are coordinated through CERT-VDE. Consult CERT-VDE Advisory VDE-2026-044 for the fixed firmware or software versions and upgrade procedures applicable to your product.
Workarounds
- Place the affected device behind a firewall and block external access to the management interface until patches are applied.
- Configure network segmentation so only jump hosts in a hardened management VLAN can reach the device.
- Where supported, disable or restrict the application module that exposes the getDevicegroups function.
- Deploy WAF or reverse proxy rules that reject requests containing SQL metacharacters in parameters bound to device group queries.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
