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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 30.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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."
- CVSS 2.0
- 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 30.20% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- microsoft/sharepoint foundation · microsoft/sharepoint portal server · microsoft/sharepoint server · microsoft/sharepoint services · microsoft/office web apps
- Source
- secure@microsoft.com
EPSS moved from 30.2% on 11 October 2026 to 30.2% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.us-cert.gov/ncas/alerts/TA13-253AUS 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/TA13-253AUS 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.