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Vulnerability record · CVE-2013-1330 · published 11 September 2013

CVE-2013-1330: Microsoft sharepoint foundation improper input validation vulnerability

Microsoft · Sharepoint Foundation

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."

10.0 CVSS 2.0 High EPSS 27% · top 2.0% CWE-20 · Improper input validation
10.0CVSS 2.0 base score
27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

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."

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.us-cert.gov/ncas/alerts/TA13-253A US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-067
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-105
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19040
http://www.us-cert.gov/ncas/alerts/TA13-253A US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-067
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-105
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19040

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2013-1330), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.