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FirefoxWeb browser · Mozilla

CVE-2015-0814

HIGH · 7.5 CVSS v2.0 Published 2015-04-01
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 37.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

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

Multiple memory corruption vulnerabilities in Mozilla Firefox's browser engine before version 37.0 allow remote attackers to cause denial of service (application crash) or potentially execute arbitrary code via unknown vectors.

MitigationUpgrade to Firefox 37.0 or later to obtain vendor patches for these browser engine vulnerabilities.

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:= 36.0.4

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
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

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 Firefox version
    Open Firefox and navigate to Help > About Firefox, or type 'about:support' in the address bar and look for the 'Version' field under 'Application Basics'. Alternatively, run 'firefox --version' from command line.
    Affected if The version displayed is exactly 36.0.4
  2. Confirm browser engine version
    In about:support page, locate the 'Build Configuration' section or check 'Mozilla Firefox' version details. The browser engine (Gecko) version corresponds to Firefox 36.0.4.
    Affected if The build shows Firefox 36.0.4 (Gecko engine version matching Firefox 36.0.4)
  3. Check for active browser sessions
    The vulnerability affects the browser engine during page rendering. If Firefox is currently running and displaying web content, the vulnerable code path could be triggered.
    Affected if Firefox 36.0.4 is actively processing web content

If your installed Firefox version is exactly 36.0.4, you are affected by this CVE and should upgrade to Firefox 37.0 or later.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to Firefox 37.0 or later to obtain vendor patches for these browser engine vulnerabilities.

Fix this in Firefox Scoped from the published advisory
  • Consultation8.0 h
  • Implementation12.0 h
  • Testing16.0 h
  • Review / QA4.0 h
40.0 hours of engineering $6,880
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,008.

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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-2015-0814 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