CVE-2016-3264
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 Internet Explorer 9 through 11 and Microsoft Edge allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Microsoft Browser Memory Corruption 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 · high confidenceMemory corruption vulnerability in Microsoft Internet Explorer 9-11 and Microsoft Edge allows remote attackers to achieve arbitrary code execution or cause denial of service through a crafted malicious website. The vulnerability stems from improper memory handling in the browser's rendering engine.
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 dataall versions= 9= 10= 11CVSS 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
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:H/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 Internet Explorer versionOpen Command Prompt and run: reg query "HKLM\SOFTWARE\Microsoft\Internet Explorer" /v Version. Alternatively, open IE, press F12, or check Help > About Internet Explorer.Affected if The version listed is 9, 10, or 11 (e.g., 9.00.8112.16421, 10.0.9200.17457, 11.0.9600.18426)
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Identify Microsoft Edge versionOpen Microsoft Edge, go to Settings > About Edge, or run: msedge --version in Command Prompt/PowerShell.Affected if Any version of Microsoft Edge is installed (the vulnerability affects all versions)
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Check if KB3175443 security update is installedOpen Command Prompt or PowerShell and run: wmic qfe list | findstr "KB3175443" OR Get-Hotfix -Id KB3175443Affected if The update is NOT listed in the output, meaning the patch has not been applied
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Assess browser exposure to untrusted websitesReview Internet Explorer or Edge security zone settings. Check if users have ability to browse arbitrary websites, particularly untrusted or malicious sites.Affected if Users can access untrusted or unknown websites from the affected browser without additional filtering or restrictions
If either Internet Explorer 9-11 or any version of Microsoft Edge is present AND KB3175443 is NOT installed, the system is vulnerable to remote code execution via the memory corruption flaw when users visit malicious websites.
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.
From vendor dataApply Microsoft security updates (KB3175443 for IE, KB3175443 for Edge) via Windows Update or patch management systems, and restrict user access to untrusted websites until patches are deployed.
- Consultation2.0 h
- Implementation4.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-3264 — 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-2016-3264 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