How severe is CVE-2000-0649?

CVE-2000-0649 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2000-0649 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0649?

CVE-2000-0649 primarily affects Microsoft Internet Information Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0649?

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

When was CVE-2000-0649 published?

CVE-2000-0649 was published on 2000-07-13 and last updated on 2026-06-16.

CVE-2000-0649

CVE-2000-0649 is a low-severity vulnerability in Microsoft Internet Information Server with a CVSS 2.0 base score of 2.6. Its EPSS exploit-prediction score of 77% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 77% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Internet Information Server
Published: 2000-07-13
Last modified: 2026-06-16

Description

IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.

Frequently asked questions

What is CVE-2000-0649?: IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.
How severe is CVE-2000-0649?: CVE-2000-0649 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2000-0649 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0649?: CVE-2000-0649 primarily affects Microsoft Internet Information Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0649?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0649 published?: CVE-2000-0649 was published on 2000-07-13 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_information_services:2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*

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