CVE-1999-0869

NONECVSS 0.0Weaponized

0.0

Internet Explorer 3.x to 4.01 allows a remote attacker to insert malicious content into a frame of another web site, aka frame spoofing.

CVSS v3: —
EG Score: —
EPSS: 95.4%
KEV: Not listed

Published

December 1, 1998

Last Modified

April 16, 2026

References (2)

cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-020
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-020

Data Freshness Timeline

(refreshed 13× in last 7d / 19× 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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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-19662✓ verified
First seen Nov 30, 1999
Microsoft Internet Explorer 4.1/5.0/4.0.1 - Subframe Spoofing
Open source ↗

Frequently asked(4)

What is CVE-1999-0869?

CVE-1999-0869 is a none vulnerability published on December 1, 1998. Internet Explorer 3.x to 4.01 allows a remote attacker to insert malicious content into a frame of another web site, aka frame spoofing.

When was CVE-1999-0869 disclosed?

CVE-1999-0869 was first published in the National Vulnerability Database on December 1, 1998, 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-1999-0869 actively exploited?

CVE-1999-0869 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0869?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0869, 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-1999-0869

📅 Published

🔄 Last Modified

🔗 References (2)