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CVE-2012-1539

36
FAUCET Score

CVE-2012-1539 is a critical use-after-free vulnerability in Microsoft Internet Explorer 9 that allows remote attackers to execute arbitrary code via a crafted website, impacting various Windows operating systems. With a CVSS score of 8.1 (HIGH), this vulnerability has a high attack complexity but can lead to complete compromise of confidentiality, integrity, and availability if successfully exploited. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

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

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
25.37%
Probability of exploitation in next 30 days
EPSS Percentile
97.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2537 is in the 91st percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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/ms12-071
secunia.com / advisories/51202
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15886
securityfocus.com / bid/56421
securitytracker.com / id
us-cert.gov / cas/techalerts/TA12-318A.html
US Government Resource