CVE-2006-3803: n/a vulnerability

CVE-2006-3803: Race condition in the JavaScript garbage collection in Mozilla Firefox 1.5 before 1.5.0.5, Thunderbird befo...

Race condition in the JavaScript garbage collection in Mozilla Firefox 1.5 before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 might allow remote attackers to execute arbitrary code by causing the garbage collector to delete a temporary variable while it is still being used during the creation of a new Function object.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 18:48 UTC (UTC+00:00)

Security readout for executives and security teams

This is a legacy Mozilla browser and mail-client memory safety issue. A malicious web page or message could trigger a JavaScript garbage-collection race and potentially run code on the user’s machine. Business urgency depends on whether obsolete Firefox, Thunderbird, or SeaMonkey versions still exist in the environment. Exposure is most likely on unmanaged legacy endpoints, old virtual desktops, preserved lab systems, or embedded workflows still using Firefox 1.5 before 1.5.0.5, Thunderbird before 1.5.0.5, or SeaMonkey before 1.0.3. Treat as high priority only if legacy affected software remains in use. For modern managed fleets, this is mainly a legacy-asset discovery and cleanup issue rather than a current widespread emergency. Mitigation focus: Upgrade Firefox to 1.5.0.5 or later where legacy 1.5 is present.; Upgrade Thunderbird to 1.5.0.5 or later where legacy installs remain.; Upgrade SeaMonkey to 1.0.3 or later where affected versions exist..

Prepared: Jun 29, 2026, 11:25 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

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Execution behavior lookup

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CVE-2006-3803 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 27, 2006, 19:00 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

4Source 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
USN-329-1CVE reference · vendor-advisory, x_refsource_UBUNTU
USN-327-1CVE reference · vendor-advisory, x_refsource_UBUNTU
mozilla-javascript-garbage-race-condition(27984)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

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