CVE-2012-4184: n/a vulnerability

CVE-2012-4184: The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0...

The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 does not prevent access to properties of a prototype for a standard class, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 20:28 UTC (UTC+00:00)

Security readout for executives and security teams

A malicious website could abuse a Firefox-era browser boundary flaw to run JavaScript with browser-level privileges. The issue affects old Mozilla products, not current supported releases unless an organization still runs the listed legacy versions. Exposure is most likely in legacy desktop fleets, kiosk systems, archived virtual machines, or old Linux distributions retaining vulnerable Mozilla packages. Modern patched Mozilla products are not indicated as affected by the provided sources. Treat as a legacy exposure cleanup item with high impact if present. Prioritize any internet-facing or user-browsing systems still running the affected versions, but do not assume current Mozilla deployments are vulnerable without inventory evidence. Mitigation focus: Upgrade affected Mozilla products beyond the fixed versions listed in the CVE description.; Apply relevant Linux vendor security updates for packaged Mozilla builds.; Retire unsupported Firefox, Thunderbird, and SeaMonkey versions from managed endpoints..

Prepared: Jun 27, 2026, 16:25 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 10, 2012, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.mozilla.org/show_bug.cgi?id=780370CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:16946CVE reference · vdb-entry, signature
firefox-cow-xss(79154)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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