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Pdf EditorApplication · Foxit

CVE-2022-43640

MEDIUM · 5.5 CVSS v3.1 Published 2023-03-29
Fix available
A fix is available. Upgrade to 10.1.10 / 11.2.4 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

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 · unedited
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader 12.0.1.12430. 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. Crafted data in a PDF file can trigger a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-18629.

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 confidence

Out-of-bounds read vulnerability in Foxit PDF Reader 12.0.1.12430 during PDF file parsing. The vulnerability allows reading past the end of an allocated buffer, enabling sensitive information disclosure. While the CVSS is 5.5, the vendor notes it can be chained with other vulnerabilities for arbitrary code execution.

MitigationUpdate Foxit PDF Reader to the latest patched version. Until then, exercise caution with PDF files from untrusted sources and disable JavaScript execution in the PDF reader settings.

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
Pdf EditorApplication
Affected:< 10.1.10>= 11.0.0, < 11.2.4>= 12.0.0.12394, < 12.0.2
Pdf ReaderApplication
Affected:< 12.0.2

CVSS 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
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Foxit PDF Reader installation and version
    Open Foxit PDF Reader, go to Help > About Foxit Reader, or right-click the application and select Properties to view the version number. Alternatively, check Add or Remove Programs (Windows) or the Applications folder (macOS) for the installed version.
    Affected if The installed version is earlier than 12.0.2 (for example, 12.0.1.12430 or any 11.x.x version)
  2. Confirm Foxit PDF Editor installation and version
    Open Foxit PDF Editor, go to Help > About Foxit PDF Editor, or check the application's properties or Add/Remove Programs to locate the version number.
    Affected if The installed version is earlier than 10.1.10; OR between 11.0.0 and 11.2.4 (excluding 11.2.4); OR between 12.0.0.12394 and 12.0.2 (excluding 12.0.2)
  3. Identify all Foxit applications on the system
    Search the system for any Foxit-related executables (FoxitReader.exe, FoxitEditor.exe, FoxitPhantomPDF.exe) using File Explorer or the command 'dir /s /b C:\*.exe | findstr -i Foxit' on Windows, or check the /Applications folder on macOS.
    Affected if Any Foxit PDF Reader version below 12.0.2 or Foxit PDF Editor version in the affected ranges listed above is found

You are affected if any Foxit PDF Reader version is below 12.0.2, or any Foxit PDF Editor version is below 10.1.10, between 11.0.0 and 11.2.4, or between 12.0.0.12394 and 12.0.2.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 10.1.10 / 11.2.4 / 12.0.2 or later
Fixed in 10.1.1011.2.412.0.2
Interim mitigation

Update Foxit PDF Reader to the latest patched version. Until then, exercise caution with PDF files from untrusted sources and disable JavaScript execution in the PDF reader settings.

Recommended fix High confidence

Foxit Pdf Reader: 12.0.2+ | Foxit Pdf Editor: 10.1.10+, 11.2.4+, or 12.0.2+

  1. 1. Determine which Foxit product is installed (Pdf Reader or Pdf Editor) and note the current version number
  2. 2. For Foxit Pdf Reader: upgrade to version 12.0.2 or later
  3. 3. For Foxit Pdf Editor: upgrade to version 10.1.10 or later (if on 10.x branch), OR version 11.2.4 or later (if on 11.x branch), OR version 12.0.2 or later (if on 12.x branch)
  4. 4. Download the appropriate fixed version from the official Foxit website (www.foxit.com)
  5. 5. Close any running instances of Foxit PDF Reader/Editor
  6. 6. Install the upgraded version following the on-screen instructions
  7. 7. Restart the application and verify the version number reflects the update
Caveat Minor - this is a patch release addressing security fixes; verify compatibility with any existing PDF forms/plugins if upgrading across major version branches (e.g., 10.x to 12.x)

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Pdf Editor Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,770
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-43640 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data