CVE-1999-0412

NONECVSS 0.0Weaponized

0.0

In IIS and other web servers, an attacker can attack commands as SYSTEM if the server is running as SYSTEM and loading an ISAPI extension.

CVSS v3: —
EG Score: —
EPSS: 93.8%
KEV: Not listed

Published

February 19, 1999

Last Modified

April 16, 2026

References (2)

cve@mitrehttp://www.securityfocus.com/bid/501
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/501

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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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-19376✓ verified
First seen Mar 8, 1999
Microsoft IIS 2.0/3.0/4.0 - ISAPI GetExtensionVersion()
Open source ↗

Frequently asked(4)

What is CVE-1999-0412?

CVE-1999-0412 is a none vulnerability published on February 19, 1999. In IIS and other web servers, an attacker can attack commands as SYSTEM if the server is running as SYSTEM and loading an ISAPI extension.

When was CVE-1999-0412 disclosed?

CVE-1999-0412 was first published in the National Vulnerability Database on February 19, 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-1999-0412 actively exploited?

CVE-1999-0412 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0412?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0412, 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-1999-0412

📅 Published

🔄 Last Modified

🔗 References (2)