CVE-2020-23898
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 User Mode Write AV in Editor+0x5ea2 of WildBit Viewer v6.6 allows attackers to cause a denial of service (DoS) via a crafted tga file.
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 User Mode Write Access Violation in the Editor component of WildBit Viewer v6.6 allows remote attackers to cause a denial of service via a specially crafted TGA image file. The vulnerability stems from improper bounds checking when parsing TGA file data, leading to a memory corruption that crashes the application.
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= 6.6CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 WildBit Viewer installation and versionCheck the installed version of WildBit Viewer by right-clicking the executable (typically Viewer.exe or similar in the WildBit Viewer program folder), selecting Properties, and reviewing the File Version field under the Details tab. Alternatively, check Add/Remove Programs or the registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for the installed version.Affected if The installed version is exactly 6.6
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Confirm Editor component usageWildBit Viewer includes a standalone Viewer and an Editor component. This vulnerability resides specifically in the Editor component. Determine if the Editor functionality is accessible or commonly used in the environment.Affected if Users have access to and use the Editor component to view or edit images
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Verify TGA file handling capabilityTGA (Targa) image format support is built into WildBit Viewer. Confirm whether the application can open .tga files by default or if TGA support plugins/modules are enabled.Affected if The application can process TGA image files through the Editor component
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Assess TGA file exposure vectorThis vulnerability is triggered when the Editor opens a specially crafted TGA file. Evaluate whether users in the environment open TGA files from untrusted or external sources, as the exploit requires a malicious TGA file to be opened.Affected if Users open TGA files from untrusted or external sources in the Editor component
A system is affected if WildBit Viewer version 6.6 is installed, the Editor component is accessible, and users open TGA files in that Editor, as the vulnerability requires parsing a specially crafted TGA file to trigger the bounds checking 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 dataApply the vendor patch or upgrade WildBit Viewer to a version where this vulnerability is remediated. If no patch is available, consider using an alternative image viewer or implement compensating controls such as restricting untrusted TGA 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-2020-23898 — 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-2020-23898 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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