How severe is CVE-2012-1859?

CVE-2012-1859 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-1859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1859?

CVE-2012-1859 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-2012-1859?

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

When was CVE-2012-1859 published?

CVE-2012-1859 was published on 2012-07-10 and last updated on 2026-06-16.

CVE-2012-1859

CVE-2012-1859 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 23% places it in the 97th 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: 23% (97th 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 scriptresx.ashx 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 "XSS scriptresx.ashx Vulnerability."

Frequently asked questions

What is CVE-2012-1859?: Cross-site scripting (XSS) vulnerability in scriptresx.ashx 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 "XSS scriptresx.ashx Vulnerability."
How severe is CVE-2012-1859?: CVE-2012-1859 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-1859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1859?: CVE-2012-1859 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-2012-1859?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-1859 published?: CVE-2012-1859 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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