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CVE-2016-1632

HIGH · 8.8 CVSS v3.0 Published 2016-03-06
Fix available
A fix is available. Upgrade to after 48.0.2564.116 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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 · unedited
The Extensions subsystem in Google Chrome before 49.0.2623.75 does not properly maintain own properties, which allows remote attackers to bypass intended access restrictions via crafted JavaScript code that triggers an incorrect cast, related to extensions/renderer/v8_helpers.h and gin/converter.h.

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 confidence

Type confusion vulnerability in Chrome's Extensions subsystem where incorrect handling of own properties in the V8 JavaScript engine (v8_helpers.h and gin/converter.h) allows crafted JavaScript to trigger an incorrect cast, bypassing intended access restrictions.

MitigationUpdate Google Chrome to version 49.0.2623.75 or later to receive the vendor patch; this vulnerability is patched via standard Chrome updates.

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
Affected:<= 48.0.2564.116

CVSS 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
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check installed Google Chrome version
    Navigate to chrome://settings/help or use 'Chrome --version' from command line to view the current Chrome version
    Affected if Version number is 48.0.2564.116 or lower (any version <= 48.0.2564.116)
  2. Confirm Chrome channel and update status
    Check if Chrome is set to receive automatic updates from stable channel; visit chrome://settings and review update settings
    Affected if Chrome is on stable channel but has not received the version 49.0.2623.75 update patch
  3. Verify Extensions subsystem is in use
    Visit chrome://extensions to confirm if any extensions are installed or enabled; the vulnerability exists in the Extensions subsystem's handling of JavaScript
    Affected if Any extensions are installed and the Chrome version is within the affected range

User is affected if Google Chrome version is 48.0.2564.116 or lower, regardless of extension configuration, since the vulnerability exists in the V8 engine's handling of JavaScript properties within the Extensions subsystem.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 48.0.2564.116
Interim mitigation

Update Google Chrome to version 49.0.2623.75 or later to receive the vendor patch; this vulnerability is patched via standard Chrome updates.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-1632 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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