| CVE ID | CVE-2021-34520 |
| CVSS SCORE | 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| AFFECTED VENDORS |
Microsoft |
| AFFECTED PRODUCTS |
SharePoint |
| VULNERABILITY DETAILS |
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft SharePoint. Authentication is required to exploit this vulnerability. The specific flaw exists within the Microsoft.SharePoint.WorkflowActions.SetVariableActivity class. A crafted SetVariableActivity element can result in instantiation of an arbitrary .NET type. An attacker can leverage this vulnerability to execute code in the context of the web service account. |
| ADDITIONAL DETAILS |
Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/en-us/vulnerability/CVE-2021-34520 |
| DISCLOSURE TIMELINE |
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| CREDIT | Anonymous |
