When was CVE-2003-0821 disclosed?

CVE-2003-0821 was first published in the National Vulnerability Database on December 15, 2003, 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-2003-0821 actively exploited?

CVE-2003-0821 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2003-0821?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2003-0821, 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.

CVE-2003-0821

NONECVSS 0.0

0.0

Microsoft Excel 97, 2000, and 2002 allows remote attackers to execute arbitrary code via a spreadsheet with a malicious XLM (Excel 4) macro that bypasses the macro security model.

CVSS v3: —
EG Score: —
EPSS: 93.5%
KEV: Not listed

References (12)

cve@mitrehttp://www.securityfocus.com/bid/9010
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-050
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/13681
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A636
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A675
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A695
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/9010
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-050
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/13681
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A636
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A675
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A695

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CVE-2003-0821

Published

Last Modified

References (12)

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2003-0821?

CVE-2003-0821

📅 Published

🔄 Last Modified

🔗 References (12)

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2003-0821?

Published

Last Modified

References (12)

Frequently asked(4)