Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Microsoft SharePoint Server remote code execution attempt

Rule Explanation

This rule looks for inbound HTTP requests sent to a Microsoft SharePoint server that are intended to exploit a remote code execution vulnerability.

What To Look For

This rule looks for attempts to exploit a remote code execution vulnerability in Microsoft SharePoint.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Execution::User Execution::Malicious File

Rule Categories::Operating Systems::Windows

Rule Categories::Server::Web Applications

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Vulnerability::Severity::High

Vulnerability::Severity::Critical

CVE

Additional Links

Rule Vulnerability

Insecure Deserialization

Insecure Deserialization relates to web application security. Applications turn an object into data through serialization; the reverse of that process, deserialization, can be vulnerable to attacks when the application trusts the data that is being deserialized. Serialized data is machine readable and not encrypted; serialized user-supplied data should not be trusted. Deserialization attacks can lead to remote code execution.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2025-21400
Loading description