CVE-2017-11774
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 2010 SP2, Outlook 2013 SP1 and RT SP1, and Outlook 2016 allow an attacker to execute arbitrary commands, due to how Microsoft Office handles objects in memory, aka "Microsoft Outlook Security Feature Bypass Vulnerability."
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 confidenceCVE-2017-11774 is a security feature bypass vulnerability in Microsoft Outlook that allows arbitrary command execution. The vulnerability exists due to improper memory handling when processing objects in Outlook, enabling an attacker to circumvent security restrictions and execute malicious commands on the affected system.
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= 2010= 2013= 2016CVSS 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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Identify installed Outlook versionOpen Outlook, go to File > Office Account > About Outlook, or run 'winword /version' from command prompt to see the version numberAffected if Version is 2010, 2013, or 2016 (exact version numbers not specified in CVE)
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Confirm Outlook build numberIn Outlook, click File > Office Account > About Outlook to view the full build numberAffected if Build number falls within the vulnerable release timeframe for 2010, 2013, or 2016 versions
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Check for security updatesIn Outlook, go to File > Office Account > Update Options > View Update History to see if KB4011086 (Outlook 2010), KB4011083 (Outlook 2013), or KB4011081 (Outlook 2016) are installedAffected if None of these specific KB updates are installed on the affected Outlook version
User is affected if they are running Outlook 2010, 2013, or 2016 without the KB4011086, KB4011083, or KB4011081 security updates respectively.
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 updates KB4011086 (Outlook 2010), KB4011083 (Outlook 2013), and KB4011081 (Outlook 2016) or later. Until patches are applied, exercise caution with unexpected email attachments and external content.
For long-term security, upgrade to a supported Outlook version such as Office 365 or Outlook 2019/2021 which receive ongoing security updates
- Check current Outlook version by opening Outlook, going to File > Office Account > About Outlook
- Determine the applicable Microsoft security update for CVE-2017-11774 by searching Microsoft Update Catalog or viewing the original security bulletin at portal.msrc.microsoft.com
- Apply the relevant security update through Windows Update or manually download from Microsoft Update Catalog
- Restart the computer after installing the update
- Verify the update installed successfully by checking installed updates via Control Panel > Programs and Features > View installed updates
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-11774 — 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-2017-11774 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