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Fencer Vulns
critical 9.3

CVE-2009-0553 in the critical feed json

Microsoft Internet Explorer 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold a…

published 2009-04-15 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0557

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
41.4%
EPSS 41.4% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Microsoft Internet Explorer 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008 allows remote attackers to execute arbitrary code via a web page that triggers presence of an object in memory that was (1) not properly initialized or (2) deleted, aka "Uninitialized Memory Corruption Vulnerability."

Timeline

  1. Published
  2. First public exploit (EDB-8479)

Exploit prediction

41.40% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-8479 Microsoft Internet Explorer - EMBED Memory Corruption (PoC) (MS09-014) dos, 2009-04-20

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-399 Resource Management Errors

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.