What’s Vulnerable › Vulnerabilities

CVE-2000-0770

• Severity: medium (CVSS 6.4 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 15.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2000-10-13 · updated 2026-06-16

Description

IIS 4.0 and 5.0 does not properly restrict access to certain types of files when their parent folders have less restrictive permissions, which could allow remote attackers to bypass access restrictions to some files, aka the "File Permission Canonicalization" vulnerability.

Affected products

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

References

• http://www.securityfocus.com/bid/1565
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-057
• http://www.securityfocus.com/bid/1565
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-057

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