What’s Vulnerable › Vulnerabilities

CVE-1999-0861

• Severity: low (CVSS 2.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2000-01-04 · updated 2026-06-16
• Weakness: CWE-362

Description

Race condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext.

Affected products

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

References

• http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ244613
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-053
• http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ244613
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-053

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