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FirefoxWeb browser · Mozilla

CVE-2016-9068

HIGH · 7.5 CVSS v3.0 Published 2018-06-11
Fix available
A fix is available. Upgrade to 50.0 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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
A use-after-free during web animations when working with timelines resulting in a potentially exploitable crash. This vulnerability affects Firefox < 50.

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 confidence

A use-after-free vulnerability in Firefox's web animation timeline handling allows memory corruption, potentially enabling arbitrary code execution or denial of service through a crafted web page.

MitigationUpgrade Firefox to version 50 or later to remediate the use-after-free vulnerability in web animations.

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
FirefoxWeb browser
Affected:< 50.0

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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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 checks

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

  1. Check if Firefox is installed
    Look for Firefox in your installed applications or run 'firefox --version' in a terminal
    Affected if Firefox is not found on the system, then this CVE does not apply to your environment
  2. Determine installed Firefox version
    Run 'firefox --version' or check the browser's About dialog (Help > About Firefox)
    Affected if The version displayed is below 50.0 (for example, 49.x, 49.0.1, 48.x, etc.)
  3. Confirm timeline feature usage
    This vulnerability affects web animation timeline handling - check if the browser handles web animations by visiting any page with CSS animations or Web Animations API content
    Affected if The browser is vulnerable AND you process web content with animations; the vulnerability is triggered by visiting a crafted webpage with web animations

You are affected if Firefox is installed with a version lower than 50.0 and you use the browser to view web content with animations.

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 50.0 or later
Fixed in 50.0
Interim mitigation

Upgrade Firefox to version 50 or later to remediate the use-after-free vulnerability in web animations.

Fix this in Firefox Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing2.0 h
  • Review / QA1.0 h
13.0 hours of engineering $2,320
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,712.

Scan for this in your stack

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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-2016-9068 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