CVE-2026-40828
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 high privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the DeleteSysLogEntry function due to improper neutralization of special elements in a SQL DELETE command allowing for reading the whole database and deleting entries in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.
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 · moderate confidenceA SQL injection vulnerability exists in the DeleteSysLogEntry function where improper neutralization of special elements in a SQL DELETE command allows an attacker to read the entire database and delete entries from a non-critical table. The vulnerability is exploitable by a high-privileged remote attacker and results in total loss of confidentiality and partial integrity loss.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
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 software with DeleteSysLogEntry functionSearch codebase for DeleteSysLogEntry function definition - this may be in application source code, a framework module, or a log management component. Review product documentation or source code index to determine which software includes this function.Affected if The target software implements a DeleteSysLogEntry function in any version
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Locate the DeleteSysLogEntry implementationFind the source file containing the DeleteSysLogEntry function - typically a log management, system utility, or admin module file. Common locations include /src/logging/, /modules/admin/, or similar paths depending on the application structure.Affected if The function exists in the installed software version
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Inspect SQL DELETE operation in DeleteSysLogEntryExamine the DeleteSysLogEntry function code to locate the SQL DELETE command. Look for string concatenation, string formatting, or other dynamic SQL construction methods used to build the DELETE statement.Affected if A SQL DELETE command is present in the DeleteSysLogEntry function
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Check for parameterization in DELETE queryReview whether the DELETE query uses parameterized queries (prepared statements, bound parameters) or directly incorporates variables into the SQL string. Look for database API calls that pass query strings with user-influential variables without proper parameter binding.Affected if The DELETE query builds SQL dynamically using input values without parameterized query methods
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Verify if function is exposed to remote attackersDetermine if DeleteSysLogEntry can be invoked by remote high-privileged users - check authentication requirements, network exposure, and privilege level needed to call this function.Affected if The function is accessible to remote authenticated users with high privileges without additional safeguards
You are affected if your software includes a DeleteSysLogEntry function that constructs SQL DELETE commands dynamically without parameterized queries and is accessible to high-privileged remote attackers.
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 dataImplement parameterized queries or prepared statements for all SQL DELETE operations in the DeleteSysLogEntry function, apply input validation, and ensure the database user has least-privilege access restricted to only necessary tables.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-40828 — 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-2026-40828 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
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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