CVE-2012-1861

Office Web Apps vulnerability

CVSS

4.3

EPSS

15.4%

EPSS pct

96th

Exploited

No known

Cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server 2010 Gold and SP1, SharePoint Foundation 2010 Gold and SP1, and Office Web Apps 2010 Gold and SP1 allows remote attackers to inject arbitrary web script or HTML via crafted JavaScript elements in a URL, aka "SharePoint Script in Username Vulnerability."

Affected vendor

Microsoft

Affected product

Office Web Apps

CVSS vector

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

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2012-07-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 15.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2012-1861

Confirm whether Microsoft Office Web Apps is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2012-1861.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2012-1861

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2012-1861 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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