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CVE-2012-2520

30
FAUCET Score

CVE-2012-2520 describes a Cross-site Scripting (XSS) vulnerability, dubbed "HTML Sanitization Vulnerability," affecting multiple Microsoft products including InfoPath, Communicator, Lync, SharePoint, Groove Server, Windows SharePoint Services, SharePoint Foundation, and Office Web Apps. This flaw allows remote attackers to inject arbitrary web script or HTML through a crafted string. With a CVSS score of 4.3, it is a medium-severity vulnerability requiring medium attack complexity and resulting in partial integrity impact, but no confidentiality or availability impact. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability garnered some community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:groove_server:2010:sp1:*:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:infopath:2007:sp2:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:infopath:2010:sp1:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2010:*:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2010:*:attendee:*:*:*:*:*

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
28.48%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2848 is in the 98th percentile among its peer group of 19,953 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

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/2012/ms12-066
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14976
securityfocus.com / bid/55797
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
us-cert.gov / cas/techalerts/TA12-283A.html
Third Party AdvisoryUS Government Resource