CVE-2020-7079
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 · uneditedAn improper signature validation vulnerability in Autodesk Dynamo BIM versions 2.5.1 and 2.5.0 may lead to code execution through maliciously crafted DLL files.
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 confidenceAutodesk Dynamo BIM versions 2.5.1 and 2.5.0 contain an improper signature validation vulnerability that allows maliciously crafted DLL files to be loaded, potentially leading to arbitrary code execution. The software fails to properly verify the authenticity of DLL files before loading them into memory.
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= 2.5.0= 2.5.1CVSS 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:3.1/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 installed Dynamo BIM versionOpen Autodesk Dynamo BIM and navigate to Help > About, or check the version in Add/Remove Programs (Programs and Features) in Windows Control Panel. The version is typically displayed in the application title bar or in the installed program's entry.Affected if The displayed version is exactly 2.5.0 or exactly 2.5.1
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Verify DLL loading behaviorInspect the Dynamo BIM application directory (typically located in Program Files or AppData) for any external or custom DLL files that may have been placed alongside the application executable.Affected if Untrusted or unsigned DLL files exist in the application directory and are being loaded by the software
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Confirm signature validation gapObserve that Dynamo BIM loads DLL files without performing cryptographic signature verification, which can be tested by placing a test DLL in the application directory and checking if Dynamo attempts to load it.Affected if The software loads unsigned or externally placed DLL files without validation warnings
A user is affected if their installed Autodesk Dynamo BIM version is exactly 2.5.0 or 2.5.1, as these versions contain the improper DLL signature validation flaw.
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 Autodesk Dynamo BIM to a patched version. Until then, exercise caution when loading external DLLs and avoid running the software with untrusted files.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7079 — 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-2020-7079 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
- No weaponised exploit code, or anything meant to cause harm
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