How severe is CVE-2013-1330?

CVE-2013-1330 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2013-1330 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-1330?

CVE-2013-1330 primarily affects Microsoft Sharepoint Foundation. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-1330?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2013-1330 published?

CVE-2013-1330 was published on 2013-09-11 and last updated on 2026-06-16.

CVE-2013-1330

CVE-2013-1330 is a critical-severity vulnerability in Microsoft Sharepoint Foundation with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 27% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Sharepoint Foundation
Published: 2013-09-11
Last modified: 2026-06-16

Description

The default configuration of Microsoft SharePoint Portal Server 2003 SP3, SharePoint Server 2007 SP3 and 2010 SP1 and SP2, and Office Web Apps 2010 does not set the EnableViewStateMac attribute, which allows remote attackers to execute arbitrary code by leveraging an unassigned workflow, aka "MAC Disabled Vulnerability."

Frequently asked questions

What is CVE-2013-1330?: The default configuration of Microsoft SharePoint Portal Server 2003 SP3, SharePoint Server 2007 SP3 and 2010 SP1 and SP2, and Office Web Apps 2010 does not set the EnableViewStateMac attribute, which allows remote attackers to execute arbitrary code by leveraging an unassigned workflow, aka "MAC Disabled Vulnerability."
How severe is CVE-2013-1330?: CVE-2013-1330 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2013-1330 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1330?: CVE-2013-1330 primarily affects Microsoft Sharepoint Foundation. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-1330?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-1330 published?: CVE-2013-1330 was published on 2013-09-11 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:microsoft:sharepoint_foundation:2010:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_foundation:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_portal_server:2003:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_services:2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_services:3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2010:sp1:*:*:*:*:*:*

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