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CVE-2012-1538

38
FAUCET Score

CVE-2012-1538 is a critical use-after-free vulnerability in Microsoft Internet Explorer 9, affecting Windows 7, Server 2008, and Vista. This flaw allows remote attackers to execute arbitrary code by enticing a user to visit a specially crafted website. With a CVSS score of 9.3, it presents a high risk due to its network-based attack vector, medium complexity, and complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no public exploit code available in Metasploit, Nuclei, or ExploitDB, and it is not listed in CISA's KEV catalog. Furthermore, there is minimal community discussion or media coverage surrounding this vulnerability.

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
21.34%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2134 is in the 88th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 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%3A15677
securityfocus.com / bid/56420
securitytracker.com / id
us-cert.gov / cas/techalerts/TA12-318A.html
US Government Resource