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TI-2000-00053 Aliases CVE-2000-0053GHSA-4r76-hhh5-w3m9

Microsoft Commercial Internet System (MCIS) IMAP server allows remote attackers to cause…

Priority MEDIUM 48Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Microsoft Commercial Internet System (MCIS) IMAP server allows remote attackers to cause a denial of service via a malformed IMAP request.

Why it matters now

EPSS 0.14696 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:commercial_internet_system:2.0:*:*:*:*:*:*:*2.0VulnerableMicrosoft
cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:*2.5VulnerableMicrosoft
  • cpe:2.3:a:microsoft:commercial_internet_system:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:* Versions 2.5 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2000-0053
  2. 2026-10-03 Alias added: GHSA-4r76-hhh5-w3m9

References

Advisory 2

  • TI-2000-00246 IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual… CVSS 2.0MEDIUM 5.0
  • TI-1999-00727 IIS FTP servers may allow a remote attacker to read or delete files on the server, even… CVSS 2.0HIGH 7.5
  • TI-1999-00817 Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers. CVSS 2.0MEDIUM 5.0
  • TI-1999-00860 Microsoft Site Server and Commercial Internet System (MCIS) do not set an expiration for… CVSS 2.0MEDIUM 5.0
  • TI-1999-00811 Race condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext. CVSS 2.0LOW 2.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences