What’s Vulnerable › Vulnerabilities

CVE-2000-0258

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2000-04-12 · updated 2026-06-16
• Weakness: CWE-20

Description

IIS 4.0 and 5.0 allows remote attackers to cause a denial of service by sending many URLs with a large number of escaped characters, aka the "Myriad Escaped Characters" Vulnerability.

Affected products

• Microsoft Internet Information Server: 4.0
• Microsoft IIS: 5.0

References

• http://www.securityfocus.com/bid/1101
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-023
• http://www.securityfocus.com/bid/1101
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-023

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