ChromeWeb browser · Google
CVE-2018-6116
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 · uneditedA nullptr dereference in WebAssembly in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
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 confidenceA nullptr dereference vulnerability existed in Google Chrome's WebAssembly implementation prior to version 66.0.3359.117. A remote attacker could craft a malicious HTML page that triggers a null pointer dereference during WebAssembly execution, potentially allowing out-of-bounds memory access.
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
ChromeWeb browser
< 66.0.3359.117
Linux DesktopOperating system
= 6.0
Linux ServerOperating system
= 6.0
Linux WorkstationOperating system
= 6.0
Debian LinuxOperating system
= 8.0= 9.0CVSS 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
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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 checksWork through these to decide whether this CVE applies to you.
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Check installed Google Chrome versionOpen Chrome, navigate to chrome://settings/help, or run 'google-chrome --version' or 'chrome --version' in terminalAffected if Version is lower than 66.0.3359.117 (e.g., 65.x.x.x or earlier)
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Verify WebAssembly is accessibleWebAssembly is enabled by default in Chrome; no manual configuration needed. The vulnerability triggers when processing malicious WebAssembly code.Affected if WebAssembly is used in any web content visited by the browser (this is the default state)
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Check Red Hat Linux Desktop version (if applicable)Run 'cat /etc/redhat-release' or 'cat /etc/os-release'Affected if Version equals 6.0 specifically
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Check Red Hat Linux Server version (if applicable)Run 'cat /etc/redhat-release' or 'cat /etc/os-release'Affected if Version equals 6.0 specifically
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Check Debian Linux version (if applicable)Run 'cat /etc/debian_version'Affected if Version equals 8.0 or 9.0 specifically
Your environment is affected if Google Chrome version is below 66.0.3359.117, or if running Red Hat 6.0 or Debian 8.0/9.0 with an older Chrome version.
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 data66.0.3359.117
Update Google Chrome to version 66.0.3359.117 or later to remediate this vulnerability. Users should ensure automatic updates are enabled or manually trigger an update through the browser's settings.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 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 $1,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6116 — 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-2018-6116 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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