CVE-1999-1011

Exp

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.

Published: 1999-07-19 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1011 is rated High Exploit Risk (86.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 79.30%, 99th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-1999-1011

EDB-ID Source Kind Published Link
19424 exploit_db edb 1999-07-19 Exploit-DB ↗
19425 exploit_db edb 1999-07-19 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-1999-1011

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 82.09% 79.30% -2.80%
2 2025-03-29 79.30% 82.09% +2.80%
3 2025-03-17 — 79.30% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1011

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-1999-1011

Affected software / configurations for CVE-1999-1011

Vendor Product Version Raw CPE
microsoft data_access_components 1.5 cpe:2.3:a:microsoft:data_access_components:1.5:*:*:*:*:*:*:*
microsoft data_access_components 2.0 cpe:2.3:a:microsoft:data_access_components:2.0:*:*:*:*:*:*:*
microsoft data_access_components 2.1 cpe:2.3:a:microsoft:data_access_components:2.1:*:*:*:*:*:*:*
microsoft index_server 2.0 cpe:2.3:a:microsoft:index_server:2.0:*:*:*:*:*:*:*
microsoft internet_information_server 3.0 cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:*:*:*:*:*
microsoft internet_information_server 4.0 cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
microsoft site_server 3.0 cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:*

References for CVE-1999-1011

cvelogic Threat Intelligence