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Vulnerabilities

Vulnerability · CVE-2001-0146

IIS 5.0 and Microsoft Exchange 2000 allow remote attackers to cause a denial of service (memory allocation error) by repeatedly sending a series of specially formatted URL's.

Published Jun 2, 2001 · catalog updated Jun 16, 2026 · internet information services

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2001-0146 is not in CISA KEV. FIRST estimates a 37.06% chance of exploitation in the next 30 days. Check whether you run internet information services.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
37.06%
Remediation
Advisory link
Affected products
cpe microsoft/exchange server · cpe microsoft/internet information services

IIS 5.0 and Microsoft Exchange 2000 allow remote attackers to cause a denial of service (memory allocation error) by repeatedly sending a series of specially formatted URL's.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/exchange server2000
  • cpe microsoft/internet information services5.0

How to fix CVE-2001-0146

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    Seen in 5.0

  • Advisory

    Open the inventory_critical record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2001-0146 is not in CISA KEV. FIRST estimates a 37.06% chance of exploitation in the next 30 days. Check whether you run internet information services.

Which versions are affected?

Compare what you have installed with microsoft/exchange server 2000; microsoft/internet information services 5.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 37.06%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Microsoft Exchange Server security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 2, 2001 · Monitored products — critical

    Detected

    IIS 5.0 and Microsoft Exchange 2000 allow remote attackers to cause a denial of service (memory allocation error) by repeatedly sending a series of specially formatted URL's.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    IIS 5.0 and Microsoft Exchange 2000 allow remote attackers to cause a denial of service (memory allocation error) by repeatedly sending a series of specially formatted URL's.

Sources

  • Monitored products — criticalVendor advisoryCVE-2001-0146

    IIS 5.0 and Microsoft Exchange 2000 allow remote attackers to cause a denial of service (memory allocation error) by repeatedly sending a series of specially formatted URL's.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Monitored products — criticalNov 1, 2026