What’s Vulnerable › Vulnerabilities

CVE-2001-0660

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 22.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-10-30 · updated 2026-06-16

Description

Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).

Affected products

• Microsoft Exchange Server: through 5.5

References

• http://support.microsoft.com/support/kb/articles/Q307/1/95.ASP
• http://www.securityfocus.com/bid/3301
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-047
• https://exchange.xforce.ibmcloud.com/vulnerabilities/7089
• http://support.microsoft.com/support/kb/articles/Q307/1/95.ASP
• http://www.securityfocus.com/bid/3301
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-047
• https://exchange.xforce.ibmcloud.com/vulnerabilities/7089

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