How severe is CVE-1999-1520?

CVE-1999-1520 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-1520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1520?

CVE-1999-1520 affects Microsoft Site Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1520?

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

When was CVE-1999-1520 published?

CVE-1999-1520 was published on 1999-05-11 and last updated on 2026-06-16.

CVE-1999-1520

CVE-1999-1520 is a medium-severity vulnerability in Microsoft Site Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Site Server
Published: 1999-05-11
Last modified: 2026-06-16

Description

A configuration problem in the Ad Server Sample directory (AdSamples) in Microsoft Site Server 3.0 allows an attacker to obtain the SITE.CSC file, which exposes sensitive SQL database information.

Frequently asked questions

What is CVE-1999-1520?: A configuration problem in the Ad Server Sample directory (AdSamples) in Microsoft Site Server 3.0 allows an attacker to obtain the SITE.CSC file, which exposes sensitive SQL database information.
How severe is CVE-1999-1520?: CVE-1999-1520 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-1520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1520?: CVE-1999-1520 affects Microsoft Site Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-1520 published?: CVE-1999-1520 was published on 1999-05-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:*

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