CVE-2009-3988: n/a vulnerability

CVE-2009-3988: Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, and SeaMonkey before 2.0.3, does not properly r...

Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, and SeaMonkey before 2.0.3, does not properly restrict read access to object properties in showModalDialog, which allows remote attackers to bypass the Same Origin Policy and conduct cross-site scripting (XSS) attacks via crafted dialogArguments values.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 06:45 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affected old Mozilla Firefox and SeaMonkey versions. A malicious web page could abuse showModalDialog handling to cross site boundaries and run cross-site scripting attacks. The main business risk is legacy desktop exposure, not modern browsers. Exposure is most likely where legacy Firefox 3.0/3.5 or SeaMonkey versions remain installed on managed desktops, kiosks, lab systems, or unsupported Linux distributions. Treat this as a legacy hygiene issue unless old Mozilla browsers still exist in the estate. If present on user-facing systems, remediate promptly because browser SOP bypass and XSS can support data exposure through web interaction. Mitigation focus: Upgrade Firefox to 3.0.18, 3.5.8, or later supported versions.; Upgrade SeaMonkey to 2.0.3 or later supported versions.; Apply relevant Linux distribution security updates from Mozilla, Ubuntu, Debian, Red Hat, Fedora, or SUSE..

Prepared: Jun 28, 2026, 03:36 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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CVE-2009-3988 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 21, 2010, 17:00 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

5Source 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:8355CVE reference · vdb-entry, signature
mozilla-showmodaldialog-xss(56362)CVE reference · vdb-entry, x_refsource_XF
oval:org.mitre.oval:def:9384CVE reference · vdb-entry, signature
https://bugzilla.mozilla.org/show_bug.cgi?id=504862CVE reference · x_refsource_CONFIRM

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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