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CVE-2011-1961

46
FAUCET Score

CVE-2011-1961 is a critical remote code execution vulnerability affecting Microsoft Internet Explorer versions 6 through 9, as well as various Windows operating systems. It allows attackers to execute arbitrary programs by tricking users into visiting a crafted website, leveraging a flaw in the telnet URI handler's application launch mechanism. With a CVSS score of 9.3, this vulnerability presents a high risk due to its network-based attack vector, medium attack complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high FAUCET Risk Score of 96/100 indicates a severe potential threat.

Impacted Technologies

VendorProductVersion(s)CPE
6CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*
8CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*
9CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
34.34%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3434 is in the 95th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvndb.jvn.jp / ja/contents/2011/JVNDB-2011-000060.html
Third Party AdvisoryVDB Entry
jvn.jp / en/jp/JVN80404511/index.html
Third Party AdvisoryVDB Entry
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-057
PatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684
Tool Signature
us-cert.gov / cas/techalerts/TA11-221A.html
Third Party AdvisoryUS Government Resource