CVE-2021-38391
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA Blind SQL injection vulnerability exists in the /DataHandler/AM/AM_Handler.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 type 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA blind SQL injection vulnerability exists in the /DataHandler/AM/AM_Handler.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. The application fails to validate the 'type' parameter before incorporating it into an SQL query, allowing unauthenticated remote attackers to inject malicious SQL statements. Successful exploitation enables code execution in the context of the NT SERVICE\MSSQLSERVER account.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 1.7.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify DIAEnergie installation and versionLocate the DIAEnergie installation directory and check the version information, typically found in the application's about page, metadata files, or installer records. Common locations include the installation folder under Program Files or the web application's banner/version disclosure.Affected if The installed version is 1.7.5 or any version prior to 1.7.5
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Verify vulnerable endpoint existsAttempt to access the endpoint /DataHandler/AM/AM_Handler.ashx on the web server hosting DIAEnergie. This can be done via a browser request or curl command to the full URL.Affected if The endpoint responds (even with an error), indicating the vulnerable code path exists on the server
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Confirm 'type' parameter acceptanceSend a GET request to the AM_Handler.ashx endpoint including a 'type' parameter, such as /DataHandler/AM/AM_Handler.ashx?type=test, and observe whether the application processes the parameter without rejecting it.Affected if The application accepts and processes the 'type' parameter without validation errors
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Check for SQL injection vulnerabilitySubmit SQL injection test payloads in the 'type' parameter (for example, type=1' OR '1'='1) and compare responses to baseline. A blind SQL injection may cause delayed responses or different error messages compared to normal input.Affected if The application exhibits unexpected behavior, errors, or time delays when SQL syntax is injected into the type parameter, indicating the parameter is not properly sanitized before use in SQL queries
A system is affected if DIAEnergie version 1.7.5 or lower is installed and the /DataHandler/AM/AM_Handler.ashx endpoint with the vulnerable 'type' parameter is accessible and accepts unsanitized SQL input.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor-provided patch for DIAEnergie version 1.7.5 or later. Until then, restrict network access to the affected endpoint, implement WAF rules to detect SQL injection patterns in the type parameter, and consider disabling the application if immediate patching is not feasible.
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Free · runs locallyCheck whether your project pulls in CVE-2021-38391 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-38391 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
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- Version or environment caveats, and links to real fixes
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