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Unrated severityNVD Advisory· Published Sep 8, 2009· Updated Jun 16, 2026

CVE-2009-1920

CVE-2009-1920

Description

The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly load decoded scripts into memory before execution, which allows remote attackers to execute arbitrary code via a crafted web site that triggers memory corruption, aka "JScript Remote Code Execution Vulnerability."

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

18
  • Microsoft/Windows 2000
    cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
  • Microsoft/Windows Server 2003
    cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
  • Microsoft/Windows Server 20086 versions
    cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*+ 5 more
    • cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x64:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x86:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:-:x32:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:-:x64:*:*:*:*:*
  • Microsoft/Windows6 versions
    cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_vista:-:-:x64:*:*:*:*:*
  • Microsoft/Windows Xp3 versions
    cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_xp:*:sp2:professional_x64:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
  • Microsoft/Jscriptllm-fuzzy
    Range: 5.1, 5.6, 5.7, 5.8

Patches

Vulnerability mechanics

References

3

News mentions

0

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