What’s Vulnerable › Vulnerabilities

CVE-1999-0867

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 21.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2000-01-04 · updated 2026-06-16
• Weakness: CWE-20

Description

Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.

Affected products

• Microsoft Commercial Internet System: 2.0, 2.5
• Microsoft Internet Information Server: 4.0
• Microsoft Site Server: 3.0-unknown

References

• http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349
• http://www.ciac.org/ciac/bulletins/j-058.shtml
• http://www.securityfocus.com/bid/579
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-029
• http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349
• http://www.ciac.org/ciac/bulletins/j-058.shtml
• http://www.securityfocus.com/bid/579
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-029

Get alerted when CVE-1999-0867 or the next vulnerability affects your stack