CVE-2011-1998

critical Microsoft
CVSS v3 Base Score
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS Score
39.5%
Exploitation probability in 30 days
Top 3% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
M
Confidentiality
C
Integrity
C
Availability
C
Published: October 12, 2011 (5329 days ago)
Last Modified: April 29, 2026
Vendor: Microsoft
Source: NVD

Description

Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka "Jscript9.dll Remote Code Execution Vulnerability."

CWE

CWE-908

Affected Products

microsoft internet explorer

References

🔗 www.securityfocus.com 🔗 docs.microsoft.com 🔗 oval.cisecurity.org 🔗 www.securityfocus.com 🔗 docs.microsoft.com