How severe is CVE-1999-0449?

CVE-1999-0449 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-1999-0449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0449?

CVE-1999-0449 affects Microsoft Internet Information Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0449?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0449 published?

CVE-1999-0449 was published on 1999-01-26 and last updated on 2026-06-16.

CVE-1999-0449

CVE-1999-0449 is a high-severity vulnerability in Microsoft Internet Information Server with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 50% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 50% (99th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Information Server
Published: 1999-01-26
Last modified: 2026-06-16

Description

The ExAir sample site in IIS 4 allows remote attackers to cause a denial of service (CPU consumption) via a direct request to the (1) advsearch.asp, (2) query.asp, or (3) search.asp scripts.

Frequently asked questions

What is CVE-1999-0449?: The ExAir sample site in IIS 4 allows remote attackers to cause a denial of service (CPU consumption) via a direct request to the (1) advsearch.asp, (2) query.asp, or (3) search.asp scripts.
How severe is CVE-1999-0449?: CVE-1999-0449 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-1999-0449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0449?: CVE-1999-0449 affects Microsoft Internet Information Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0449 published?: CVE-1999-0449 was published on 1999-01-26 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*

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