CVE-1999-1093

NONECVSS 0.0

0.0

Buffer overflow in the Window.External function in the JScript Scripting Engine in Internet Explorer 4.01 SP1 and earlier allows remote attackers to execute arbitrary commands via a malicious web page.

CVSS v3: —
EG Score: —
EPSS: 91.1%
KEV: Not listed

Published

December 31, 1999

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://support.microsoft.com/support/kb/articles/q191/2/00.asp
cve@mitrehttp://www.iss.net/security_center/static/1276.php
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-011
af854a3a-2127-422b-91ae-364da2661108http://support.microsoft.com/support/kb/articles/q191/2/00.asp
af854a3a-2127-422b-91ae-364da2661108http://www.iss.net/security_center/static/1276.php
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-011

Data Freshness Timeline

(refreshed 13× in last 7d / 20× 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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Frequently asked(4)

What is CVE-1999-1093?

CVE-1999-1093 is a none vulnerability published on December 31, 1999. Buffer overflow in the Window.External function in the JScript Scripting Engine in Internet Explorer 4.01 SP1 and earlier allows remote attackers to execute arbitrary commands via a malicious web page.

When was CVE-1999-1093 disclosed?

CVE-1999-1093 was first published in the National Vulnerability Database on December 31, 1999, 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-1999-1093 actively exploited?

CVE-1999-1093 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1093?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1093, 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-1999-1093

📅 Published

🔄 Last Modified

🔗 References (6)