CVE-2011-1998

View on CVE.org

Published Oct 12, 2011 CVSS 2.0 · 9.3 Critical EPSS 21.2% KEV · Not listed

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."

Analysis

No analysis available yet

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_7:-:::::::*
	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::
	cpe:2.3:o:microsoft:windows_server_2008:r2:-::::::
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
	cpe:2.3:o:microsoft:windows_vista:-:sp2::::::

No data.

No data available yet.

Remediation

No remediation available yet

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: 21.2% (21.228% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.securityfocus.com/bid/49963
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199

History

No history.

Subscriptions

Microsoft Internet Explorer Windows 7 Windows Server 2008 Windows Vista

Weaknesses

CWE-908
Use of Uninitialized Resource

Sources

CVE record Updated: Aug 6, 2024, 10:46 PM

Status: PUBLISHED
Assigner: microsoft
Published: Oct 12, 2011, 1:00 AM
Updated: Aug 6, 2024, 10:46 PM
Reserved: May 9, 2011, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 16, 2026, 11:30 PM

Status: Modified
Published: Oct 12, 2011, 2:52 AM
Modified: Jun 16, 2026, 11:30 PM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2011-10-11T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "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.\""}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2018-10-12T19:57:01.000Z", "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft"}, "references": [{"name": "MS11-081", "tags": ["vendor-advisory", "x_refsource_MS"], "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081"}, {"name": "49963", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/49963"}, {"name": "oval:org.mitre.oval:def:13199", "tags": ["vdb-entry", "signature", "x_refsource_OVAL"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secure@microsoft.com", "ID": "CVE-2011-1998", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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.\""}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "MS11-081", "refsource": "MS", "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081"}, {"name": "49963", "refsource": "BID", "url": "http://www.securityfocus.com/bid/49963"}, {"name": "oval:org.mitre.oval:def:13199", "refsource": "OVAL", "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T22:46:01.072Z"}, "title": "CVE Program Container", "references": [{"name": "MS11-081", "tags": ["vendor-advisory", "x_refsource_MS", "x_transferred"], "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081"}, {"name": "49963", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/49963"}, {"name": "oval:org.mitre.oval:def:13199", "tags": ["vdb-entry", "signature", "x_refsource_OVAL", "x_transferred"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199"}]}]}, "cveMetadata": {"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "assignerShortName": "microsoft", "cveId": "CVE-2011-1998", "datePublished": "2011-10-12T01:00:00.000Z", "dateReserved": "2011-05-09T00:00:00.000Z", "dateUpdated": "2024-08-06T22:46:01.072Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*", "matchCriteriaId": "C043EDDD-41BF-4718-BDCF-158BBBDB6360", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*", "matchCriteriaId": "E33796DB-4523-4F04-B564-ADF030553D51", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*", "matchCriteriaId": "C2B1C231-DE19-4B8F-A4AA-5B3A65276E46", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*", "matchCriteriaId": "5F422A8C-2C4E-42C8-B420-E0728037E15C", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:-:*:*:*:*:*:*", "matchCriteriaId": "A9408620-06A8-4A3C-97C8-41A688282E3D", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*", "matchCriteriaId": "2ACA9287-B475-4AF7-A4DA-A7143CEF9E57", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*", "matchCriteriaId": "BF1AD1A1-EE20-4BCE-9EE6-84B27139811C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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.\""}, {"lang": "es", "value": "Microsoft Internet Explorer v9 no trata correctamente los objetos en la memoria, lo que permite a atacantes remotos ejecutar c\u00f3digo de su elecci\u00f3n accediendo a un objeto que que no Se ha inicializado correctamente. Tambi\u00e9n conocido como \"Vulnerabilidad de ejecuci\u00f3n Remota de c\u00f3digo de jscript9.dll\"."}], "id": "CVE-2011-1998", "lastModified": "2026-06-16T23:30:34.347", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}]}, "published": "2011-10-12T02:52:43.677", "references": [{"source": "secure@microsoft.com", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/49963"}, {"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081"}, {"source": "secure@microsoft.com", "tags": ["Tool Signature"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/49963"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Tool Signature"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}