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CVE-2012-4787

37
FAUCET Score

CVE-2012-4787 is a critical use-after-free vulnerability affecting Microsoft Internet Explorer 9 and 10, as well as several Windows operating systems. This flaw allows remote attackers to execute arbitrary code by enticing a user to a specially crafted website that improperly handles object initialization or deletion. With a CVSS score of 9.0, this vulnerability is highly severe, requiring no user interaction and leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or publicly available exploit code, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
9CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*
10CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:10:*:*:*:*:*:*:*

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
17.57%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.1757 is in the 92nd percentile among its peer group of 200 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.4 Reddit, 1.2 Bluesky, 0.8 Mastodon, and 2.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.8 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2012/ms12-077
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16211
us-cert.gov / cas/techalerts/TA12-346A.html
US Government Resource