CVE-2016-7208
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 · uneditedThe Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7200, CVE-2016-7201, CVE-2016-7202, CVE-2016-7203, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.
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 confidenceMemory corruption vulnerability in the Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause denial of service via a crafted website. The vulnerability stems from improper memory handling when the scripting engine processes JavaScript objects.
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 versionsCVSS 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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Verify Microsoft Edge is installedOpen Settings > Apps > Apps & features, or run 'Get-AppxPackage *Microsoft.Edge*' in PowerShell to list installed Edge versionsAffected if Microsoft Edge is present on the system
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Check Microsoft Edge versionLaunch Edge, go to Settings > About Microsoft Edge, or navigate to edge://settings/help in the address bar to view the version numberAffected if The installed version has not received the MS16-129 security patch
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Locate the Chakra scripting engine DLLFind chakra.dll or chakra64.dll in the Edge installation folder, typically at C:\Windows\System32\ or C:\Program Files (x86)\Microsoft\Edge\Application\Affected if The Chakra DLL exists and its version matches unpatched Edge builds
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Check Chakra DLL file versionRight-click the chakra.dll file, select Properties, then view the File version tab, or run 'Get-Item <path> | Format-List *' in PowerShellAffected if The file version is older than the patched version released in MS16-129 (the exact version depends on your Windows 10 build)
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Verify JavaScript execution is enabled in EdgeOpen Edge Settings > Advanced settings and confirm 'Enable JavaScript' is turned on, or check via edge://settings/content/javascriptAffected if JavaScript is enabled, as the exploit requires executing JavaScript code to trigger the memory corruption
Your environment is affected if Microsoft Edge is installed with a version that predates the MS16-129 security update and JavaScript execution is enabled in the browser.
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 the Microsoft security update (MS16-129 or subsequent) for Microsoft Edge to address the Chakra scripting engine vulnerability. Until patched, restrict access to untrusted websites and disable JavaScript in Edge for high-risk browsing.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-7208 — 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-2016-7208 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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- 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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