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FirefoxWeb browser · Mozilla

CVE-2006-6498

MEDIUM · 6.8 CVSS v2.0 Published 2006-12-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
77/100
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 JavaScript engine for Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, SeaMonkey before 1.0.7, and Mozilla 1.7 and probably earlier on Solaris, allow remote attackers to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via unknown impact and attack 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 · moderate confidence

Multiple unspecified vulnerabilities in the JavaScript engine of legacy Mozilla products (Firefox 2.x/1.5.x, Thunderbird, SeaMonkey, Mozilla 1.7) allow remote attackers to cause memory corruption, denial of service, and potentially execute arbitrary code. The specific attack vectors are not detailed in the CVE.

MitigationUpgrade affected applications to patched versions (Firefox 2.0.0.1+, 1.5.0.9+, Thunderbird 1.5.0.9+, SeaMonkey 1.0.7+) or migrate to currently supported browser versions, as these are end-of-life products with no vendor patches available.

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:= 1.5= 1.5.0.1= 1.5.0.2= 1.5.0.3= 1.5.0.4= 1.5.0.5= 1.5.0.6= 1.5.0.7= 1.5.0.8= 2.0
MozillaApplication
Affected:= 1.7
ThunderbirdApplication
Affected:= 0.1= 0.2= 0.3= 0.4= 0.5= 0.6= 0.7= 0.7.1= 0.7.2= 0.7.3= 0.8= 0.9
SeamonkeyApplication
Affected:= 1.0= 1.0.1= 1.0.2= 1.0.3= 1.0.4= 1.0.5= 1.0.6

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
M
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/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. Identify installed Mozilla products
    Check for presence of Firefox, Thunderbird, SeaMonkey, or Mozilla Suite on the system. On Windows, examine Program Files directories or check installed programs. On Linux, check /usr/bin or package managers. On macOS, check /Applications.
    Affected if Any of the listed products (Firefox 1.5.x/2.0, Thunderbird 0.1-0.9, SeaMonkey 1.0-1.0.6, Mozilla 1.7) are installed.
  2. Determine Firefox version
    For Firefox, run 'firefox -v' from command line or access Help > About Firefox in the application menu.
    Affected if Version is 1.5 (any 1.5.x patch release) or exactly 2.0.
  3. Determine Thunderbird version
    For Thunderbird, run 'thunderbird -v' or access Help > About Thunderbird.
    Affected if Version is between 0.1 and 0.9 inclusive.
  4. Determine SeaMonkey version
    For SeaMonkey, run 'seamonkey -v' or access Help > About SeaMonkey.
    Affected if Version is between 1.0 and 1.0.6 inclusive.
  5. Determine Mozilla Suite version
    For Mozilla Suite, run 'mozilla -v' or access Help > About Mozilla.
    Affected if Version is exactly 1.7.

A user is affected if any of these legacy Mozilla products are installed and the version matches one of the specific versions listed in the affected products list; JavaScript is enabled by default in all these products, making the JavaScript engine vulnerability exploitable.

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 affected applications to patched versions (Firefox 2.0.0.1+, 1.5.0.9+, Thunderbird 1.5.0.9+, SeaMonkey 1.0.7+) or migrate to currently supported browser versions, as these are end-of-life products with no vendor patches available.

Fix this in Firefox Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
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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-2006-6498 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