CVE-2016-1131
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 · uneditedBuffer overflow in the CL_vsprintf function in Takumi Yamada DX Library before 3.16 allows remote attackers to execute arbitrary code via a crafted string.
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 confidenceBuffer overflow vulnerability in the CL_vsprintf function of Takumi Yamada DX Library versions prior to 3.16 allows remote attackers to overflow a buffer by providing a crafted string, potentially leading to arbitrary code execution. The vulnerability stems from insufficient bounds checking in the CL_vsprintf function when processing string input.
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<= 3.15eCVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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 DX Library installationLocate the Dx Library files in your project or system. This is typically distributed as header files (DxLibrary.h or similar) and possibly a compiled library file (.lib, .dll, or .a depending on platform). Search your project directories for files containing 'DX Library' or 'DxLib' in their metadata or comments.Affected if The library is present in your environment
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Determine installed DX Library versionOpen the main DX Library header file and look for version information, typically found in a version constant, macro, or comment near the top of the file (often labeled as 'DX_VERSION', 'DXLIB_VERSION', or similar). The version may also appear in the filename of the library binary itself.Affected if The version cannot be determined or is <= 3.15e
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Verify vulnerable CL_vsprintf usageSearch your codebase for calls to CL_vsprintf function. This is a core library function, so if your application or project links against the vulnerable DX Library version, the function is available. Use source code search tools (grep, findstr) to find 'CL_vsprintf' string references in your project files.Affected if CL_vsprintf function calls exist in code using DX Library version <= 3.15e
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Confirm version is within affected rangeCompare the identified version number to the affected range: any version prior to 3.16, including 3.15e and all earlier versions (such as 3.15d, 3.15c, etc.), are vulnerable.Affected if Installed version is 3.15e or any earlier version (3.15d, 3.15, etc.)
You are affected if your environment contains DX Library version 3.15e or any version prior to 3.16, and your application uses the CL_vsprintf function with user-controlled or unsanitized string 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 dataUpgrade DX Library to version 3.16 or later which contains the patch for this buffer overflow vulnerability. If immediate upgrade is not feasible, implement input validation and length constraints on all strings passed to CL_vsprintf functions as a compensating control.
- Consultation3.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2016-1131 — 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-2016-1131 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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- Version or environment caveats, and links to real fixes
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