CVE-2012-1891

CRITICAL
9.8
CVSS Score
Published: July 10, 2012 at 09:00 PM UTC
Updated: June 16, 2026 at 11:40 PM UTC
7 products affected across 1 vendorData Access ComponentsWindows Data Access ComponentsWindows Server 2008

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Severity
CRITICAL9.8
Exploit prediction
EPSS 29%
SSVC
No known exploit

Description

Heap-based buffer overflow in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2 and Windows Data Access Components (WDAC) 6.0 allows remote attackers to execute arbitrary code via crafted XML data that triggers access to an uninitialized object in memory, aka "ADO Cachesize Heap Overflow RCE Vulnerability."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

microsoft-windows-server-2003 (environment) · microsoft-windows-xp (environment)
microsoft-windows-7 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-vista (environment)
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119CWE-908

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