Is CVE-1999-1011 in the CISA KEV catalog?

No. CVE-1999-1011 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-1999-1011?

CVE-1999-1011 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-1999-1011?

CVE-1999-1011 has an EPSS score of 77.14% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-1999-1011

HIGHEPSS 99th pctl

10.0

CVSS v2

NVD

Description

The Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components (MDAC) in IIS 3.x and 4.x exposes unsafe methods, which allows remote attackers to execute arbitrary commands.

CWE-264

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

77.14%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

http://www.ciac.org/ciac/bulletins/j-054.shtml
http://www.osvdb.org/272
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-004
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-025
https://www.securityfocus.com/bid/529

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.