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I AccessApplication · Ibm

CVE-2015-7422

MEDIUM · 5.5 CVSS v3.0 Published 2016-01-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

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
Buffer overflow in IBM i Access 7.1 on Windows allows local users to cause a denial of service (application crash) via unspecified vectors.

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

A buffer overflow vulnerability exists in IBM i Access 7.1 on Windows that allows local users to crash the application via unspecified vectors. The flaw stems from insufficient bounds checking in the affected component, leading to memory corruption when processing certain input.

MitigationApply the IBM i Access 7.1 patch or upgrade to a newer, patched version of the software. If no patch is available, consider restricting local access to trusted users only.

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
I AccessApplication
Affected:= 7.1

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/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 checks

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

  1. Verify IBM i Access is installed
    Open Windows Control Panel, go to Programs and Features, and look for 'IBM i Access' or 'IBM i Access for Windows' in the installed programs list. Alternatively, check the installation directory (typically C:\Program Files\IBM\iAccess\Client) for existence.
    Affected if IBM i Access 7.1 appears in installed programs
  2. Confirm the installed version
    Right-click on the IBM i Access executable (such as cwbcxfer.exe or other .exe files in the installation directory), select Properties, then go to the Details tab to view the File Version. Or use the Windows command 'wmic product where "name like 'IBM i Access'" get version' to query the installed version.
    Affected if The version shown is exactly 7.1 (no service pack or fix pack number indicated, or showing 7.1.0.x)
  3. Check for patches or service packs
    Look for any additional version information in the Add/Remove Programs entry for IBM i Access. Also check the IBM i Access installation directory for any readme or fixpack files that might indicate patch level.
    Affected if No additional service packs or patches have been applied to the base 7.1 installation
  4. Verify the application runs on affected Windows versions
    Confirm the Windows version where IBM i Access 7.1 is installed. Check by running 'winver' or accessing System Properties. The vulnerability specifically affects the Windows environment.
    Affected if IBM i Access 7.1 is running on any supported Windows version (XP, Vista, 7, 8.x, or 10)
  5. Identify the executable components
    Examine the IBM i Access installation directory (default: C:\Program Files\IBM\iAccess\Client or C:\IBM\iAccess) for executable files. Common components include cwbcxfer.exe, cwbunzip.exe, and other cwb*.exe files that handle data transfer and processing.
    Affected if The vulnerable executable components from version 7.1 are present on the system

The environment is affected if IBM i Access version 7.1 (without subsequent patches) is installed on Windows, as the buffer overflow exists in this specific version regardless of which component triggers it.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the IBM i Access 7.1 patch or upgrade to a newer, patched version of the software. If no patch is available, consider restricting local access to trusted users only.

Fix this in I Access Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.

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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-2015-7422 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
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