Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2011-1961

The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the handler application, which allows remote attackers to execute arbitrary programs via a crafted web site, aka "Telnet Handler Remote Code Execution Vulnerability."

Security Impact Summary

CVE-2011-1961 is a security vulnerability that . Impacting 6 products from microsoft, from microsoft, from microsoft and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-08-10T21:55:01.343

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 9.3 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.6

Impact Score

10.0

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	microsoft	internet_explorer	6	Yes
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	7	Yes
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	8	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	9	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_vista	-	No

References

http://jvn.jp/en/jp/JVN80404511/index.html Third Party Advisory, VDB Entry ([email protected])
http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.html Third Party Advisory, VDB Entry ([email protected])
http://www.us-cert.gov/cas/techalerts/TA11-221A.html Third Party Advisory, US Government Resource ([email protected])
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057 Patch, Vendor Advisory ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684 Tool Signature ([email protected])
http://jvn.jp/en/jp/JVN80404511/index.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/cas/techalerts/TA11-221A.html Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684 Tool Signature (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.