How severe is CVE-2012-1861?

CVE-2012-1861 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-1861 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1861?

CVE-2012-1861 primarily affects Microsoft Office Web Apps. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-1861?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-1861 published?

CVE-2012-1861 was published on 2012-07-10 and last updated on 2026-06-16.

CVE-2012-1861

CVE-2012-1861 is a medium-severity vulnerability in Microsoft Office Web Apps with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Office Web Apps
Published: 2012-07-10
Last modified: 2026-06-16

Description

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."

Frequently asked questions

What is CVE-2012-1861?: 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."
How severe is CVE-2012-1861?: CVE-2012-1861 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-1861 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1861?: CVE-2012-1861 primarily affects Microsoft Office Web Apps. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-1861?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-1861 published?: CVE-2012-1861 was published on 2012-07-10 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:microsoft:office_web_apps:2010:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2010:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_foundation:2010:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_foundation:2010:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:sp1:*:*:*:*:*:*

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