How severe is CVE-2000-0024?

CVE-2000-0024 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2000-0024 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0024?

CVE-2000-0024 primarily affects Microsoft Internet Information Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0024?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0024 published?

CVE-2000-0024 was published on 1999-12-21 and last updated on 2026-06-16.

CVE-2000-0024

CVE-2000-0024 is a medium-severity vulnerability in Microsoft Internet Information Server with a CVSS 2.0 base score of 6.4. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Information Server
Published: 1999-12-21
Last modified: 2026-06-16

Description

IIS does not properly canonicalize URLs, potentially allowing remote attackers to bypass access restrictions in third-party software via escape characters, aka the "Escape Character Parsing" vulnerability.

Frequently asked questions

What is CVE-2000-0024?: IIS does not properly canonicalize URLs, potentially allowing remote attackers to bypass access restrictions in third-party software via escape characters, aka the "Escape Character Parsing" vulnerability.
How severe is CVE-2000-0024?: CVE-2000-0024 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2000-0024 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0024?: CVE-2000-0024 primarily affects Microsoft Internet Information Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0024?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0024 published?: CVE-2000-0024 was published on 1999-12-21 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:site_server_commerce:3.0:*:*:*:*:*:*:*

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