CVE-2007-0033
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 · uneditedMicrosoft Outlook 2002 and 2003 allows user-assisted remote attackers to execute arbitrary code via a malformed VEVENT record in an .iCal meeting request or ICS 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 · high confidenceMicrosoft Outlook 2002 and 2003 contain a vulnerability when parsing malformed VEVENT calendar entries in .iCal (.ics) meeting request files. An attacker can craft a malicious ICS file that, when opened by a user, triggers a buffer overflow leading to arbitrary code execution.
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= 2000= xp= 2003= 2000= 2002= 2003CVSS 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
- Network
- Complexity
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/Au:N/C:C/I:C/A:C
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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Identify installed Outlook versionOpen Outlook, go to Help > About Microsoft Outlook, or check Add/Remove Programs for Microsoft Office installationAffected if Version is 2000, 2002, or 2003 (the affected versions)
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Confirm Outlook handles calendar dataCheck if the user has ever opened or imported a calendar meeting request, or verify the Calendar folder exists and is functional in OutlookAffected if Calendar feature is actively used or available, which enables .ics file processing
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Verify if the MS07-029 patch is installedCheck Windows Update history for security update KB934552 (MS07-029), or view installed updates in Add/Remove ProgramsAffected if The security update KB934552 is NOT installed on the system
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Check for subsequent cumulative updatesReview installed Outlook/Office updates for any patches released after May 2007 that may include this fixAffected if No patches from May 2007 or later have been applied to the Outlook installation
A system is affected if it runs Outlook 2000, 2002, or 2003 with calendar functionality enabled and lacks the MS07-029 security update or any subsequent cumulative updates containing this fix.
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 Microsoft security patch MS07-029 (or subsequent cumulative updates) for Outlook 2002/2003, or upgrade to a supported Outlook version. Instruct users to avoid opening untrusted .ics attachments.
Microsoft Office 2007 Service Pack 3 or later (Office 2010/2013/2016 recommended, or Microsoft 365)
- 1. Back up all important data and email files (PST, OST) from the current Office installation
- 2. Uninstall Microsoft Office 2000, XP, or 2003 completely from the system
- 3. Install a supported version of Microsoft Office (Office 2007 Service Pack 3 or later, or preferably Office 2010/2013/2016, or Microsoft 365)
- 4. During installation of the new Office version, import or recreate email accounts and calendar data
- 5. Verify that the new Outlook version properly handles .iCal/.ics files and VEVENT records
- 6. Ensure Windows Update is enabled and configured to receive security updates for the new Office installation
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
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2007-0033 — 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-2007-0033 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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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.
- 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