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CVE-1999-1011

83
FAUCET Score

CVE-1999-1011 describes a critical vulnerability in the Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components (MDAC) within IIS 3.x and 4.x, allowing remote attackers to execute arbitrary commands. This vulnerability has a CVSS score of 10.0 (HIGH), indicating a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, exploit modules are readily available in Metasploit and ExploitDB, suggesting a high potential for exploitation despite a lack of recent community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.5CPE matchmatch criteria
cpe:2.3:a:microsoft:data_access_components:1.5:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:microsoft:data_access_components:2.0:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:a:microsoft:data_access_components:2.1:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:microsoft:index_server:2.0:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
77.14%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: MS99-025 Microsoft IIS MDAC msadcs.dll RDS Arbitrary Remote Command Execution · Jul 17, 1998
ExploitDB: EDB-19425 · Jul 19, 1999
This CVE's current EPSS score of 0.7714 is in the 99th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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