CVE-2012-3961: n/a vulnerability

CVE-2012-3961: Use-after-free vulnerability in the RangeData implementation in Mozilla Firefox before 15.0, Firefox ESR 10...

Use-after-free vulnerability in the RangeData implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

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 memory-safety flaw that could let a remote attacker crash affected applications or potentially run code. It affects legacy Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey versions before the listed fixed releases. Exposure is most likely in unsupported legacy browsers, mail clients, ESR builds, or downstream Linux packages that were never updated. Current supported Mozilla releases should not be affected based on the fixed versions listed in the CVE. Prioritize remediation where legacy Mozilla software can process web or email content. The business risk is highest on systems still using unsupported versions because the vulnerability can affect code execution, not just availability. Mitigation focus: Upgrade Firefox to 15.0 or later.; Upgrade Firefox ESR 10.x to 10.0.7 or later.; Upgrade Thunderbird to 15.0 or later..

Prepared: Jun 28, 2026, 00:52 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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Execution behavior lookup

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CVE-2012-3961 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 29, 2012, 10:00 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=771873CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:16514CVE 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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