CVE-2009-1920
Microsoft Windows JScript 5.1-5.8 - Remote Code Execution via Decoded Script Memory Corruption
Title source: llmDescription
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."
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-045
US Government Resource third-party-advisory
x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA09-251A.html
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6316
Scores
EPSS
0.2151
EPSS Percentile
97.3%
Details
CWE
CWE-94
Status
published
Products (5)
microsoft/windows_2000
microsoft/windows_server_2003
microsoft/windows_server_2008
(6 CPE variants)
microsoft/windows_vista
(6 CPE variants)
microsoft/windows_xp
(3 CPE variants)
Published
Sep 08, 2009
Tracked Since
Feb 18, 2026