Is CVE-2012-1891 in the CISA KEV catalog?

No. CVE-2012-1891 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-1891?

CVE-2012-1891 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2012-1891?

CVE-2012-1891 has an EPSS score of 29.41% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-1891

CRITICALEPSS 98th pctl

9.8

CVSS v3

NVD

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."

CWE-119Buffer Overflow CWE-908

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

29.41%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.