CVE-2012-3986: n/a vulnerability

CVE-2012-3986: Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x...

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 do not properly restrict calls to DOMWindowUtils (aka nsDOMWindowUtils) methods, which allows remote attackers to bypass intended access restrictions via crafted JavaScript code.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 20:21 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla security issue where specially crafted JavaScript could bypass intended browser or mail-client access restrictions. It affected Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey versions released before the fixed versions named in the CVE. The source bundle does not provide CVSS scoring or evidence of active exploitation. Exposure is most likely in legacy systems still running affected Mozilla browsers, mail clients, or downstream Linux distribution packages from the 2012 era. Modern patched installations should not be exposed based on the fixed versions listed in the CVE description. Treat as a legacy software hygiene issue unless affected versions still exist. If they do, prioritize remediation because the attack vector is remote JavaScript and the affected products process untrusted web or email content. Mitigation focus: Upgrade affected Mozilla products to the fixed versions or later.; Check vendor advisories for distribution-specific package updates.; Remove unsupported legacy Firefox, Thunderbird, and SeaMonkey installations..

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

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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

3Source 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=775868CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:16834CVE reference · vdb-entry, signature

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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