CVE-2009-1305: n/a vulnerability

CVE-2009-1305: The JavaScript engine in Mozilla Firefox before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey before 1....

The JavaScript engine in Mozilla Firefox before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.16 allows remote attackers to cause a denial of service (application crash) and possibly trigger memory corruption via vectors involving JSOP_DEFVAR and properties that lack the JSPROP_PERMANENT attribute.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:04 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla JavaScript engine flaw affecting legacy Firefox, Thunderbird, and SeaMonkey releases. A malicious web page or HTML-capable content could crash the application, with possible memory corruption noted. Modern urgency depends on whether these obsolete versions still exist in the environment. Exposure is most likely on legacy workstations, embedded kiosks, lab systems, or old Linux distributions still running affected Mozilla packages. Current mainstream browser deployments are unlikely to be affected unless obsolete software remains installed. Treat as a legacy exposure cleanup item unless affected systems are confirmed in active use. Prioritize remediation for systems browsing untrusted sites, processing external email, or operating in regulated environments where obsolete software creates audit risk. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey beyond the affected versions listed in the CVE.; Apply vendor or Linux distribution security updates referenced for affected packages.; Remove obsolete Mozilla applications where business use is no longer required..

Prepared: Jun 28, 2026, 11:04 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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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 22, 2009, 18:00 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

9Source 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
oval:org.mitre.oval:def:10110CVE reference · vdb-entry, signature
oval:org.mitre.oval:def:6090CVE reference · vdb-entry, signature
FEDORA-2009-3875CVE reference · vendor-advisory, x_refsource_FEDORA
https://bugzilla.mozilla.org/show_bug.cgi?id=476049CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:6248CVE reference · vdb-entry, signature
oval:org.mitre.oval:def:6232CVE reference · vdb-entry, signature
USN-764-1CVE reference · vendor-advisory, x_refsource_UBUNTU
oval:org.mitre.oval:def:6921CVE 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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