CVE-2012-3994: n/a vulnerability

CVE-2012-3994: 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 allow remote attackers to conduct cross-site scripting (XSS) attacks via a binary plugin that uses Object.defineProperty to shadow the top object, and leverages the relationship between top.location and the location property.

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

Security readout for executives and security teams

This vulnerability affected older Mozilla browsers and mail clients. A malicious page could abuse plugin behavior to cause cross-site scripting in affected versions. Business risk is mainly to legacy endpoints still running Firefox, Thunderbird, or SeaMonkey builds from before the 2012 security releases. Exposure is most likely on unmanaged legacy desktops, old Linux distributions, or embedded environments retaining affected Mozilla packages. Modern supported Mozilla releases should not be assumed affected based on this bundle. Treat as a legacy exposure cleanup item unless affected software is still present on user endpoints. The issue is old and not KEV-listed in the bundle, but browser XSS flaws can still matter where obsolete clients remain in production. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey beyond the affected versions.; Check Mozilla and operating-system vendor advisories for exact fixed packages.; Remove or retire unsupported legacy Mozilla 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

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2012-3994 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

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=765527CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:16798CVE 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

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.