CVE-2012-5830: n/a vulnerability

CVE-2012-5830: Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird b...

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

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

Security readout for executives and security teams

This is a legacy Mozilla Mac OS X flaw. Opening malicious HTML in affected Firefox, Thunderbird, or SeaMonkey could let an attacker run code as the user. Business risk is mainly from old unmanaged Macs, frozen images, or unsupported application bundles. Exposure is likely low in modern fleets but material where legacy Mac OS X systems run Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, or SeaMonkey before 2.14. Handle as a legacy exposure cleanup item unless affected products remain in active use. If present on internet-facing or email-heavy workstations, prioritize removal or upgrade because the impact is arbitrary code execution. Mitigation focus: Upgrade affected Mozilla products to the fixed versions or later.; Remove unsupported Firefox, Thunderbird, and SeaMonkey builds from Mac endpoints.; Check Mozilla and operating-system vendor advisories for package-specific fixes..

Prepared: Jun 24, 2026, 12:04 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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ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2012-5830 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 21, 2012, 11:00 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=775228CVE reference · x_refsource_CONFIRM
firefox-html-file-code-execution(80183)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

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