CVE-2012-2520Groove Server XSS
Cross-site scripting (XSS) vulnerability in Microsoft InfoPath 2007 SP2 and SP3 and 2010 SP1, Communicator 2007 R2, Lync 2010 and 2010 Attendee, SharePoint Server 2007 SP2 and SP3 and 2010 SP1, Groove Server 2010 SP1, Windows SharePoint Services 3.0 SP2, SharePoint Foundation…
Published Oct 9, 2012 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2012-2520 is a medium-severity vulnerability (CVSS 4.3 v2) affecting Groove Server (Microsoft), Infopath (Microsoft), Lync (Microsoft) and 5 more products.
- It is exploited in the wild, listed in Industry KEV feed since Jan 15, 2014. No public exploit code is known.
- EPSS estimates a 34% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v2
4.3
AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS (30-day exploit likelihood)
34%
Higher than 98.4% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
49/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 15, 2014
463 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Description
Cross-site scripting (XSS) vulnerability in Microsoft InfoPath 2007 SP2 and SP3 and 2010 SP1, Communicator 2007 R2, Lync 2010 and 2010 Attendee, SharePoint Server 2007 SP2 and SP3 and 2010 SP1, Groove Server 2010 SP1, Windows SharePoint Services 3.0 SP2, SharePoint Foundation 2010 SP1, and Office Web Apps 2010 SP1 allows remote attackers to inject arbitrary web script or HTML via a crafted string, aka "HTML Sanitization Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jan 15, 2014 | n/a | Not reported |
Affected Products
12 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Groove ServerMicrosoft | 2010-sp1 | n/a |
| InfopathMicrosoft | 2007-sp2, 2010-sp1 | n/a |
| LyncMicrosoft | 2010 | n/a |
| Office CommunicatorMicrosoft | 2007-r2 | n/a |
| Office Web AppsMicrosoft | 2010-sp1 | n/a |
Timeline
Publicly disclosed
Oct 9, 2012
Added to Industry KEV feed
Jan 15, 2014
Last updated
Apr 28, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
FAQ
Common Questions.
Cross-site scripting (XSS) vulnerability in Microsoft InfoPath 2007 SP2 and SP3 and 2010 SP1, Communicator 2007 R2, Lync 2010 and 2010 Attendee, SharePoint Server 2007 SP2 and SP3 and 2010 SP1, Groove Server 2010 SP1, Windows SharePoint Services 3.0 SP2, SharePoint Foundation 2010 SP1, and Office Web Apps 2010 SP1 all…
Affected: Groove Server (Microsoft) versions 2010-sp1; Infopath (Microsoft) versions 2007-sp2, 2010-sp1; Lync (Microsoft) versions 2010, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jan 15, 2014.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2012-2520 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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