CVE-2022-28671
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 Foxit PDF Reader 11.2.1.53537. 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 handling of Doc objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16639.
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 use-after-free or null pointer dereference vulnerability in Foxit PDF Reader 11.2.1.53537 allows remote attackers to execute arbitrary code via a malicious PDF file. The flaw exists in Doc object handling where the software fails to validate object existence before performing operations on it, enabling code execution 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<= 10.1.7.37777>= 11.0, <= 11.2.1.53537<= 11.2.1.53537CVSS 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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Check Foxit PDF Reader versionOpen Foxit PDF Reader, go to Help > About Foxit Reader (or press F9), or locate the executable in Program Files and check file properties for version infoAffected if Version is 11.2.1.53537 or earlier (any version <= 11.2.1.53537)
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Check Foxit PDF Editor versionOpen Foxit PDF Editor, go to Help > About Foxit PDF Editor, or check the executable properties in Program Files for version informationAffected if Version is <= 10.1.7.37777 OR version is >= 11.0.0.0 and <= 11.2.1.53537
If either Foxit PDF Reader or Foxit PDF Editor is installed at a version within the affected ranges listed above, the environment is vulnerable to this CVE.
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.
dbcve · scopedApply the vendor-supplied patch for Foxit PDF Reader to the latest version. Until patched, avoid opening untrusted PDF files and consider using enterprise malware detection or PDF sandboxing for additional protection.
Any version of Foxit PDF Reader/Pdf Editor newer than 11.2.1.53537 (latest version available at foxit.com)
- 1. Identify the currently installed Foxit PDF Reader or Pdf Editor version from the application
- 2. Navigate to the official Foxit website at www.foxit.com to locate the latest version of the product
- 3. Download the latest available version of Foxit PDF Reader or Pdf Editor (newer than version 11.2.1.53537)
- 4. Close any running instances of the Foxit application
- 5. Run the installer for the updated version and follow the installation prompts
- 6. Verify the new version is installed by checking Help > About in the application
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2022-28671 — 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-2022-28671 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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