CVE-2012-3975: n/a vulnerability

CVE-2012-3975: The DOMParser component in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12...

The DOMParser component in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 loads subresources during parsing of text/html data within an extension, which allows remote attackers to obtain sensitive information by providing crafted data to privileged extension code.

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

Security readout for executives and security teams

CVE-2012-3975 is an old Mozilla information-disclosure flaw. In affected Firefox, Thunderbird, and SeaMonkey versions, privileged extension code parsing attacker-supplied HTML could unintentionally load external resources, potentially exposing sensitive information. The main business concern is legacy browser or mail-client installations with vulnerable extensions. Exposure is most likely in legacy Mozilla deployments: Firefox before 15.0, Thunderbird before 15.0, or SeaMonkey before 2.12, especially where extensions process remote or untrusted HTML. The bundle's structured affected CPE data is incomplete, so product/version validation should use Mozilla and distribution advisories. Treat as a legacy exposure cleanup item unless unsupported Mozilla software is still present in business workflows. Prioritize remediation on systems handling email, browsing, or extensions that process outside content. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey to fixed or later versions.; Apply relevant Ubuntu or SUSE security updates for packaged Mozilla products.; Inventory legacy systems that still run unsupported Mozilla browser or mail-client builds..

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

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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

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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=770684CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:16855CVE reference · vdb-entry, signature

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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