CVE Vulnerability Advisory Database

[Affected Scope] Microsoft SharePoint Server 2016, 2019, and Subscription Edition.

[Impact] Authorized attackers can execute arbitrary code over the network, leading to full server compromise.

[Mitigation] Apply official Microsoft security updates immediately and monitor for unauthorized web shell activity.

[Affected Scope] Microsoft SharePoint Server on-premises deployments

[Impact] Unauthenticated remote attackers can bypass security features over the network to access sensitive data or escalate privileges

[Mitigation] Apply the official Microsoft security updates immediately and restrict external network exposure until patched

[Affected Scope] Microsoft SharePoint Server deployments

[Impact] Unauthorized remote attackers can execute arbitrary code over the network and fully compromise the system

[Mitigation] Apply the official Microsoft security updates immediately and restrict external network exposure

[Affected Scope] Microsoft Office SharePoint Server environments

[Impact] Unauthenticated remote attackers can bypass authentication mechanisms over the network to elevate privileges to administrative levels

[Mitigation] Immediately apply the official Microsoft security patches and restrict external network access to SharePoint management endpoints

[Affected Scope] Microsoft SharePoint Server deployments

[Impact] Unauthenticated remote attackers can execute arbitrary code over the network and fully compromise the host server

[Mitigation] Apply the official Microsoft security updates immediately, and restrict network access to SharePoint endpoints until patched

[Affected Scope] Microsoft SharePoint Server deployments

[Impact] An authorized attacker can exploit a deserialization of untrusted data vulnerability over the network to execute arbitrary code with server privileges.

[Mitigation] Immediately apply the official security patches provided by Microsoft and restrict network access to SharePoint servers.

[Affected Scope] Microsoft SharePoint Server deployments

[Impact] An unauthenticated remote attacker can exploit improper input validation (CWE-20) over the network to perform spoofing, potentially leading to unauthorized data exposure and modification

[Mitigation] Immediately apply the official security updates provided by Microsoft, and implement WAF rules to monitor and block anomalous HTTP requests in the interim

[Affected Scope] Microsoft SharePoint Server deployments

[Impact] Unauthenticated remote attackers can execute arbitrary code over the network and gain full control of the target server.

[Mitigation] Apply the official Microsoft security patches immediately and restrict external access to SharePoint web interfaces until patched.