CVE-2011-1998 in the critical feed json
Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by access…
published 2011-10-12 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1992
- cvss
- 9.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 21.2%
- EPSS 21.2% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
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."
Patch / fix
Exploit prediction
21.23% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-908 Use of Uninitialized Resource
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2011/ms11-081
vendor-advisory, patch
-
securityfocus.com
/bid/49963
vdb-entry, broken-link, third-party-advisory
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199
vdb-entry, signature, tool-signature
Sources
- CVE List CVE-2011-1998
- NVD CVE-2011-1998
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.