CVE-2026-40845: Unauthenticated SQL Injection Vulnerability

CVE-2026-40845 Overview

CVE-2026-40845 is a SQL injection vulnerability affecting the devices_configuration view. A low-privileged remote attacker can inject malicious SQL syntax into a SELECT statement due to improper neutralization of special elements [CWE-89]. Successful exploitation results in a total loss of confidentiality over data accessible through the affected query.

The issue was disclosed through CERT-VDE advisory VDE-2026-044 and is tracked in the National Vulnerability Database (NVD).

Critical Impact
Authenticated attackers with low privileges can extract sensitive data from the backend database over the network without user interaction.

Affected Products

Product details are not specified in the published NVD record
Refer to the CERT-VDE Advisory VDE-2026-044 for vendor and version information

Discovery Timeline

2026-05-27 - CVE-2026-40845 published to NVD
2026-05-27 - Last updated in NVD database

Technical Details for CVE-2026-40845

Vulnerability Analysis

The vulnerability resides in the devices_configuration view, where user-controllable input flows into a SQL SELECT command without proper sanitization or parameterization. An attacker authenticated with low privileges can inject SQL syntax that alters the intended query logic.

The flaw is reachable over the network. Attack complexity is low and no user interaction is required. The impact is confined to confidentiality, with no documented effect on integrity or availability of the affected system.

Exploitation can expose records that the authenticated role would not normally be authorized to read. Techniques such as UNION-based extraction, boolean-based blind injection, or time-based blind injection are typical against this class of flaw classified under [CWE-89].

Root Cause

The root cause is improper neutralization of special elements used in a SQL command. The devices_configuration view constructs queries by concatenating untrusted input directly into the SELECT statement rather than binding parameters through prepared statements.

Attack Vector

The attack is conducted remotely over the network. The attacker authenticates with a low-privilege account and submits crafted input to the view's query interface. The injected payload is executed in the backend database with the privileges of the application's database account.

No verified proof-of-concept code is published for CVE-2026-40845. Refer to the CERT-VDE Advisory VDE-2026-044 for vendor-supplied technical detail.

Detection Methods for CVE-2026-40845

Indicators of Compromise

Database query logs containing SQL meta-characters such as ', --, UNION SELECT, or OR 1=1 directed at the devices_configuration view
Unexpected SELECT queries originating from the application service account targeting system catalogs such as information_schema
Repeated authenticated requests from a single low-privileged account that produce abnormally large result sets

Detection Strategies

Enable database query auditing on the affected view and alert on syntactically anomalous SELECT statements
Deploy a web application firewall (WAF) with SQL injection signatures in front of the management interface
Correlate authentication logs with database query patterns to identify low-privilege accounts performing reconnaissance queries

Monitoring Recommendations

Monitor for spikes in failed query parse errors, which often accompany blind SQL injection probing
Track outbound data volume from the database tier to detect bulk exfiltration
Review access patterns for the devices_configuration endpoint and flag sessions issuing payloads with encoded SQL tokens

How to Mitigate CVE-2026-40845

Immediate Actions Required

Apply the vendor patch referenced in CERT-VDE Advisory VDE-2026-044 as soon as it is available
Restrict network access to the affected management interface to trusted administrative networks
Rotate credentials for any low-privileged accounts that could reach the devices_configuration view

Patch Information

Consult the CERT-VDE Advisory VDE-2026-044 for the authoritative list of fixed versions and update instructions. The NVD record does not enumerate specific affected product versions at the time of publication.

Workarounds

Disable or restrict access to the devices_configuration view until a patched release is deployed
Enforce strict network segmentation so that only administrative hosts can reach the application's authenticated endpoints
Apply WAF rules that block SQL meta-characters in parameters routed to the affected view
Audit and reduce database account privileges so the application role cannot read tables outside its functional scope