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Cx ProgrammerApplication · Omron

CVE-2022-43509

HIGH · 7.8 CVSS v3.1 Published 2022-12-07
Fix available
A fix is available. Upgrade to after 9.77 or later.
See remediation →
81/100
Remediation priority · High
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
Out-of-bounds write vulnerability exists in CX-Programmer v.9.77 and earlier, which may lead to information disclosure and/or arbitrary code execution by having a user to open a specially crafted CXP 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 · moderate confidence

An out-of-bounds write vulnerability exists in CX-Programmer's CXP file parsing logic. When parsing a specially crafted CXP file, the software writes data beyond the bounds of an allocated memory buffer, leading to heap corruption. This can be exploited for information disclosure (reading adjacent memory) and potentially arbitrary code execution by overwriting function pointers or adjacent objects.

MitigationDo not open CXP files from untrusted sources. Update CX-Programmer to a version beyond 9.77 when a patch is released. Consider running CX-Programmer in a sandboxed environment as an additional defense.

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
Cx ProgrammerApplication
Affected:<= 9.77

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
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 checks

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

  1. Check if CX-Programmer is installed
    Open Windows Control Panel > Programs and Features, or use PowerShell: Get-ItemProperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.DisplayName -like '*CX-Programmer*'}
    Affected if CX-Programmer appears in the installed programs list
  2. Determine installed CX-Programmer version
    In Programs and Features, locate CX-Programmer and note the Version column, or check the executable's properties: Right-click CXP.exe > Properties > Details (typical path: C:\Program Files\Omron\CX-Programmer\CXP.exe)
    Affected if The version displayed is 9.77 or lower
  3. Compare version to affected range
    Compare your installed version number to the affected range: any version <= 9.77 is vulnerable
    Affected if Your installed version is 9.77 or any lower version number
  4. Assess exposure to CXP file handling
    Check if CX-Programmer is configured as a handler for .cxp files, or if users on this system commonly open CXP project files from external or untrusted sources
    Affected if CX-Programmer is set to open .cxp files and users handle files from varied sources

If CX-Programmer version 9.77 or lower is installed and can open .cxp files, the system is vulnerable to this out-of-bounds write flaw when processing a specially crafted CXP file.

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 a release after 9.77
Interim mitigation

Do not open CXP files from untrusted sources. Update CX-Programmer to a version beyond 9.77 when a patch is released. Consider running CX-Programmer in a sandboxed environment as an additional defense.

Recommended fix Moderate confidence

CX-Programmer version > 9.77 (latest available version from Omron)

  1. 1. Close CX-Programmer completely before proceeding with the update
  2. 2. Navigate to the official Omron website or authorized distributor to obtain the latest CX-Programmer version
  3. 3. Download the latest version of CX-Programmer (version greater than 9.77)
  4. 4. Run the installer with appropriate administrator privileges
  5. 5. Follow the on-screen installation prompts to complete the upgrade
  6. 6. After installation, verify the installed version by opening CX-Programmer and checking Help > About CX-Programmer
  7. 7. Do not open any untrusted or specially crafted CXP files from unverified sources
  8. 8. Consider implementing file extension associations or email filtering to block untrusted .CXP attachments as an additional precaution
Caveat Verify compatibility with existing projects and any connected PLC devices before upgrading in production environments

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

Fix this in Cx Programmer Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.

Scan for this in your stack

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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-2022-43509 in production — separate from our analysis above.

No notes yet

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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