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Fencer Vulns
critical 9.3

CVE-2009-3672 in the critical feed json

Microsoft Internet Explorer 6 and 7 does not properly handle objects in memory that (1) were not properly initialized or (2) are deleted, w…

published 2009-12-02 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3647

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
71.8%
EPSS 71.8% chance of exploitation in 30 days, percentile 99.4%
public exploits
2
Metasploit, Exploit-DB

Summary

Microsoft Internet Explorer 6 and 7 does not properly handle objects in memory that (1) were not properly initialized or (2) are deleted, which allows remote attackers to execute arbitrary code via vectors involving a call to the getElementsByTagName method for the STYLE tag name, selection of the single element in the returned list, and a change to the outerHTML property of this element, related to Cascading Style Sheets (CSS) and mshtml.dll, aka "HTML Object Memory Corruption Vulnerability." NOTE: some of these details are obtained from third party information. NOTE: this issue was originally assigned CVE-2009-4054, but Microsoft assigned a duplicate identifier of CVE-2009-3672. CVE consumers should use this identifier instead of CVE-2009-4054.

Timeline

  1. First public exploit (Metasploit exploit/windows/browser/ms09_072_style_object)
  2. Published

Exploit prediction

71.80% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.