Is CVE-2021-38390 actively exploited?

No active exploitation of CVE-2021-38390 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-38390 be exploited remotely?

Yes. CVE-2021-38390 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-38390?

CVE-2021-38390 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-38390

CWE-89Published: August 30, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A Blind SQL injection vulnerability exists in the /DataHandler/HandlerEnergyType.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. The application does not properly validate the user-controlled value supplied through the parameter egyid before using it as part of an SQL query. A remote, unauthenticated attacker can exploit this issue to execute arbitrary code in the context of NT SERVICE\MSSQLSERVER.

NVD Source

Technical Analysis

CVE-2021-38390 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.