CVE-1999-0874

NONECVSS 0.0Weaponized

0.0

Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with .HTR, .IDC, or .STM extensions.

CVSS v3: —
EG Score: —
EPSS: 99.3%
KEV: Not listed

Published

June 16, 1999

Last Modified

April 16, 2026

References (10)

cve@mitrehttp://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ234905
cve@mitrehttp://www.ciac.org/ciac/bulletins/j-048.shtml
cve@mitrehttp://www.eeye.com/html/Research/Advisories/AD06081999.html
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-019
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A915
af854a3a-2127-422b-91ae-364da2661108http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ234905
af854a3a-2127-422b-91ae-364da2661108http://www.ciac.org/ciac/bulletins/j-048.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.eeye.com/html/Research/Advisories/AD06081999.html
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-019
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A915

Data Freshness Timeline

(refreshed 7× in last 7d / 11× 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.

2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (5 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-16468✓ verified
First seen Apr 30, 2010
Microsoft IIS 4.0 - '.htr' Path Overflow (MS02-018) (Metasploit)
Open source ↗
Metasploitexploit/windows/iis/ms02_018_htr✓ verified
First seen Apr 10, 2002
MS02-018 Microsoft IIS 4.0 .HTR Path Overflow
Open source ↗
Exploit-DBEDB-19247✓ verified
First seen Jun 15, 1999
Microsoft IIS 4.0 - Remote Buffer Overflow (3)
Open source ↗
Exploit-DBEDB-19245✓ verified
First seen Jun 15, 1999
Microsoft IIS 4.0 - Remote Buffer Overflow (1)
Open source ↗
Exploit-DBEDB-19246✓ verified
First seen Jun 15, 1999
Microsoft IIS 4.0 - Remote Buffer Overflow (2)
Open source ↗
Exploit-DBEDB-19248✓ verified
First seen Jun 15, 1999
Microsoft IIS 4.0 - Remote Buffer Overflow (4)
Open source ↗

Frequently asked(4)

What is CVE-1999-0874?

CVE-1999-0874 is a none vulnerability published on June 16, 1999. Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with .HTR, .IDC, or .STM extensions.

When was CVE-1999-0874 disclosed?

CVE-1999-0874 was first published in the National Vulnerability Database on June 16, 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-1999-0874 actively exploited?

CVE-1999-0874 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0874?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0874, 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-1999-0874

📅 Published

🔄 Last Modified

🔗 References (10)