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CVE-2011-0026

45
FAUCET Score

CVE-2011-0026 is a critical integer signedness error in the SQLConnectW function within Microsoft Data Access Components (MDAC) and Windows Data Access Components (WDAC), affecting various Windows operating systems. This vulnerability allows remote attackers to execute arbitrary code by supplying a specially crafted, long Data Source Name (DSN) argument, bypassing signed comparison checks and leading to a buffer overflow. With a CVSS score of 9.3, it presents a severe risk due to its network-based attack vector, medium attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.8CPE matchmatch criteria
cpe:2.3:a:microsoft:data_access_components:2.8:sp1:*:*:*:*:*:*
2.8CPE matchmatch criteria
cpe:2.3:a:microsoft:data_access_components:2.8:sp2:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_data_access_components:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
34.40%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.3440 is in the 95th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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

osvdb.org / 70443
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-002
secunia.com / advisories/42804
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333
support.avaya.com / css/P8/documents/100124846
securityfocus.com / bid/45695
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-011A.html
US Government Resource
vupen.com / english/advisories/2011/0075
zerodayinitiative.com / advisories/ZDI-11-001