CVE-2011-1961
The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2011-1961- CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2011-1961- Updated
- 2026-11-02
EUVDEUVD-2011-1955 No score
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."
- Record
EUVD-2011-1955- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qwrv-2qv7-f9m4 No score
The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the...
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."
- Record
GHSA-qwrv-2qv7-f9m4- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-1961 is a high vulnerability (CVSS 9.3) in Microsoft Internet Explorer, published August 10, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 34.2%, the 98th percentile. No source names a fixed version.
References
docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057
jvn.jp/en/jp/JVN80404511/index.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684
jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.html
us-cert.gov/cas/techalerts/TA11-221A.html
nvd.nist.gov/vuln/detail/CVE-2011-1961
github.com/advisories/GHSA-qwrv-2qv7-f9m4