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CVE-2011-1891

24
FAUCET Score

CVE-2011-1891 is a reflected cross-site scripting (XSS) vulnerability affecting Microsoft Windows SharePoint Services 3.0 SP2 and SharePoint Foundation 2010 (Gold and SP1). This flaw allows remote attackers to inject arbitrary web script or HTML through unspecified parameters in a script request. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial integrity impact, but no confidentiality or availability impact. Despite its FAUCET Risk Score of 94/100 and an EPSS score higher than 97% of all CVEs, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_foundation:2010:*:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_foundation:2010:sp1:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x32:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x64:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
16.77%
Probability of exploitation in next 30 days
EPSS Percentile
96.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.1677 is in the 97th percentile among its peer group of 19,955 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-074
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12864
us-cert.gov / cas/techalerts/TA11-256A.html
US Government Resource