Is CVE-2012-4782 in the CISA KEV catalog?

No. CVE-2012-4782 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4782?

CVE-2012-4782 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2012-4782?

CVE-2012-4782 has an EPSS score of 25.55% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-4782

HIGHEPSS 98th pctl

9.3

CVSS v2

NVD

Description

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "CMarkup Use After Free Vulnerability."

CWE-399

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

25.55%probability of exploitation in 30 days

98thpercentile

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

References

http://www.us-cert.gov/cas/techalerts/TA12-346A.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-077
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16066

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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.