CVE-2021-31479
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 · uneditedThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDF files. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12634.
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 remote code execution vulnerability exists in OpenText Brava! Desktop 16.6.3.84 due to improper pointer initialization during PDF file parsing. An attacker can exploit this by tricking a user into opening a maliciously crafted PDF file, allowing execution of arbitrary code in the context of the current process.
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= 16.6.3.84CVSS 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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Verify OpenText Brava! Desktop installationCheck for the presence of OpenText Brava! Desktop in the system Program Files directory, Start Menu, or Windows Registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\UninstallAffected if OpenText Brava! Desktop is installed on the system
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Confirm exact version numberRight-click the Brava! Desktop executable (typically Brava.exe or similar) and view Properties > Details to read the File Version, or check the version in Help > About within the applicationAffected if The installed version is exactly 16.6.3.84
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Verify PDF parsing functionality is activeCheck if PDF file associations are registered with Brava! Desktop (look in Settings > File Associations or Default Programs), or review recent file open activity for .pdf files processed by BravaAffected if PDF files are associated with or have been opened by Brava! Desktop, enabling the vulnerable parsing code path
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Review PDF files opened recentlyCheck Windows Prefetch, recent documents, or application logs for PDF files that may have been opened by Brava! Desktop, particularly from untrusted sourcesAffected if Any PDF files have been opened using Brava! Desktop version 16.6.3.84
A user is affected if OpenText Brava! Desktop version 16.6.3.84 is installed and PDF files are processed or associated with this application.
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 vendor-supplied patch or update to OpenText Brava! Desktop when available. Until then, avoid opening untrusted or unexpected PDF files from unknown sources.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-31479 — 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-2021-31479 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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