CVE-2004-1021

NONECVSS 0.0

0.0

iCal before 1.5.4 on Mac OS X 10.2.3, and other later versions, does not alert the user when handling calendars that use alarms, which allows attackers to execute programs and send e-mail via alarms.

CVSS v3: —
EG Score: —
EPSS: 65.8%
KEV: Not listed

Published

March 1, 2005

Last Modified

April 16, 2026

References (4)

cve@mitrehttp://lists.apple.com/archives/security-announce//2004/Nov/msg00000.html
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/18209
af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce//2004/Nov/msg00000.html
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/18209

Data Freshness Timeline

(refreshed 11× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
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2026-05-28 13:42 UTCepss_batch
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2026-05-22 21:15 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch
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Frequently asked(4)

What is CVE-2004-1021?

CVE-2004-1021 is a none vulnerability published on March 1, 2005. iCal before 1.5.4 on Mac OS X 10.2.3, and other later versions, does not alert the user when handling calendars that use alarms, which allows attackers to execute programs and send e-mail via alarms.

When was CVE-2004-1021 disclosed?

CVE-2004-1021 was first published in the National Vulnerability Database on March 1, 2005, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2004-1021 actively exploited?

CVE-2004-1021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2004-1021?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-1021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2004-1021

📅 Published

🔄 Last Modified

🔗 References (4)