CVE-2011-1961

Name: CVE-2011-1961
Creator: NVD / NIST
Published: 2011-08-10T21:55:01.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 34.34%

Last modified Jun 16, 2026

CVE-2011-1961 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 34.34% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability

34.34%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	6
Microsoft	Internet Explorer	7
Microsoft	Internet Explorer	8
Microsoft	Internet Explorer	9

References

http://jvn.jp/en/jp/JVN80404511/index.htmlThird Party Advisory, VDB Entry
http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.htmlThird Party Advisory, VDB Entry
http://www.us-cert.gov/cas/techalerts/TA11-221A.htmlThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684Tool Signature
http://jvn.jp/en/jp/JVN80404511/index.htmlThird Party Advisory, VDB Entry
http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.htmlThird Party Advisory, VDB Entry
http://www.us-cert.gov/cas/techalerts/TA11-221A.htmlThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684Tool Signature

Timeline

Published: Aug 10, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1961?

How severe is CVE-2011-1961?

Severity scoring for CVE-2011-1961 is pending analysis. The EPSS model estimates a 34.34% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1961?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1961?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST