CVE-1999-1094

NONECVSS 0.0

0.0

Buffer overflow in Internet Explorer 4.01 and earlier allows remote attackers to execute arbitrary commands via a long URL with the "mk:" protocol, aka the "MK Overrun security issue."

CVSS v3: —
EG Score: —
EPSS: 91.5%
KEV: Not listed

Published

December 31, 1999

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://marc.info/?l=bugtraq&m=88480839506155&w=2
cve@mitrehttp://support.microsoft.com/support/kb/articles/q176/6/97.asp
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/917
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=88480839506155&w=2
af854a3a-2127-422b-91ae-364da2661108http://support.microsoft.com/support/kb/articles/q176/6/97.asp
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/917

Data Freshness Timeline

(refreshed 11× in last 7d / 18× 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-1999-1094?

CVE-1999-1094 is a none vulnerability published on December 31, 1999. Buffer overflow in Internet Explorer 4.01 and earlier allows remote attackers to execute arbitrary commands via a long URL with the "mk:" protocol, aka the "MK Overrun security issue."

When was CVE-1999-1094 disclosed?

CVE-1999-1094 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-1999-1094 actively exploited?

CVE-1999-1094 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1094?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1094, 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-1999-1094

📅 Published

🔄 Last Modified

🔗 References (6)