CVE-2009-0821: n/a vulnerability

CVE-2009-0821: Mozilla Firefox 2.0.0.20 and earlier allows remote attackers to cause a denial of service (application cras...

Mozilla Firefox 2.0.0.20 and earlier allows remote attackers to cause a denial of service (application crash) via nested calls to the window.print function, as demonstrated by a window.print(window.print()) in the onclick attribute of an INPUT element.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 16:17 UTC (UTC+00:00)

Security readout for executives and security teams

This old Firefox issue lets a malicious webpage crash the browser by abusing repeated print-dialog behavior. The cited material describes denial of service only, not data theft or system compromise. Business urgency is mainly for environments still running Firefox 2.0.0.20 or earlier. Exposure is likely limited to legacy or unmanaged systems still using Firefox 2.0.0.20 or earlier. Modern managed fleets are unlikely to be affected, but kiosks, old VDI images, lab systems, or embedded workflows may retain obsolete browsers. Treat this as a low-priority legacy hygiene issue unless the organization still operates obsolete Firefox builds in business-critical workflows. The main risk is disruption to a user session, not confirmed compromise. Mitigation focus: Inventory endpoints for Firefox 2.0.0.20 or earlier.; Remove or replace unsupported Firefox versions where found.; Check Mozilla or vendor guidance for historical fixed versions..

Prepared: Jun 28, 2026, 11:23 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 5, 2009, 02:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

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