Which products and versions are affected by CVE-2011-0027?

Affected: Data Access Components (Microsoft) versions 2.8-sp1, 2.8-sp2; Windows Data Access Components (Microsoft) versions 6.0. The full list is in the CVE brief.

Is CVE-2011-0027 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2011-0027 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2011-0027?

Public exploit code is available.

Is there a fix for CVE-2011-0027?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2011-0027 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2011-0027

CriticalPublic exploit

Published Jan 11, 2011 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2011-0027 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Data Access Components (Microsoft), Windows Data Access Components (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 54% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

9.3

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

EPSS (30-day exploit likelihood)

54%

Higher than 99.0% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2011-0027 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, does not properly validate memory allocation for internal data structures, which allows remote attackers to execute arbitrary code, possibly via a large CacheSize property that triggers an integer wrap and a buffer overflow, aka "ADO Record Memory Vulnerability." NOTE: this might be a duplicate of CVE-2010-1117 or CVE-2010-1118.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Data Access ComponentsMicrosoft	2.8-sp1, 2.8-sp2	n/a
Windows Data Access ComponentsMicrosoft	6.0	n/a

Timeline

Publicly disclosed
Jan 11, 2011
Last updated
Apr 28, 2026

Weakness Type

CWE-20 Improper Input Validation

References

advisory42804
advisoryADV-2011-0075
exploitExploitDB-15984
other70444
otherMS11-002

7 more references in the full CVE brief

FAQ

Common Questions.

Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, does not properly validate memory allocation for internal data structures, which allows remote attackers to execute arbitrary code, possibly via a large CacheSize property that triggers an integer wrap and a buffer…
Affected: Data Access Components (Microsoft) versions 2.8-sp1, 2.8-sp2; Windows Data Access Components (Microsoft) versions 6.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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