THREATPORT/VULNERABILITY/CVE-1999-0449
HIGH SEVERITY

CVE-1999-0449

Internet Information Server vulnerability

CVSS
7.8
EPSS
49.5%
EPSS pct
99th
Exploited
No known
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.
Affected vendor
Microsoft
Affected product
Internet Information Server
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Published
1999-01-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to availability.

Its EPSS score of 49.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-1999-0449

  • Confirm whether Microsoft Internet Information Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-1999-0449.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-1999-0449

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-1999-0449 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-1999-0449?

Run an instant, non-intrusive external scan to check your attack surface for CVE-1999-0449.

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