CVE-2011-1998
Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote...
CVE-2011-1998 is a high vulnerability (CVSS 9.3) in Microsoft Internet Explorer, published October 12, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 21.2%, the 97th percentile. No source names a fixed version.
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2011-1998- CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-908
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2011-1998- Updated
- 2026-11-02
EUVDEUVD-2011-1992 No score
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."
- Record
EUVD-2011-1992- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-825m-chm7-qrrg No score
Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote...
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."
- Record
GHSA-825m-chm7-qrrg- Weakness
- CWE-908
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |