Vulnerability Details : CVE-2009-1920

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."

Vulnerability category: Memory CorruptionExecute code

Published 2009-09-08 22:30:00

Updated 2019-02-26 14:04:01

Source Microsoft Corporation

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2009-1920

Probability of exploitation activity in the next 30 days: 93.64%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2009-1920

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
9.3	HIGH	AV:N/AC:M/Au:N/C:C/I:C/A:C	8.6	10.0	[email protected]
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete

CWE ids for CVE-2009-1920

CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Assigned by: [email protected] (Primary)

References for CVE-2009-1920

Products affected by CVE-2009-1920

Microsoft » Windows 2000 » Version: N/A Update SP4
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
Matching versions
Microsoft » Windows Xp » Update SP2 Professional X64 Edition
cpe:2.3:o:microsoft:windows_xp:*:sp2:professional_x64:*:*:*:*:*
Matching versions
Microsoft » Windows Xp » Version: N/A Update SP2
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
Matching versions
Microsoft » Windows Xp » Version: N/A Update SP3
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2003 » Update SP2
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
Matching versions
Microsoft » Windows Vista » Update SP1 X64 Edition
cpe:2.3:o:microsoft:windows_vista:*:sp1:x64:*:*:*:*:*
Matching versions
Microsoft » Windows Vista » Update SP2 X64 Edition
cpe:2.3:o:microsoft:windows_vista:*:sp2:x64:*:*:*:*:*
Matching versions
Microsoft » Windows Vista
cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Vista » Version: N/A Update SP2
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
Matching versions
Microsoft » Windows Vista » Version: N/A Update SP1
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*
Matching versions
Microsoft » Windows Vista » Version: N/A X64 Edition
cpe:2.3:o:microsoft:windows_vista:-:-:x64:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Itanium Edition
cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Version: N/A X32 Edition
cpe:2.3:o:microsoft:windows_server_2008:-:-:x32:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Version: N/A Update SP2 X86 Edition
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x86:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Version: N/A Update SP2 X64 Edition
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x64:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Version: N/A X64 Edition
cpe:2.3:o:microsoft:windows_server_2008:-:-:x64:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2008 » Version: N/A Update SP2 Itanium Edition
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:*
Matching versions