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Web-Shell

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medium advisory

Unusual Child Execution via Web Server

This rule detects unusual child process executions originating from web server processes on Linux systems, potentially indicating attackers exploiting web servers for persistence.

Elastic Defend persistence web-shell linux
2r 4t
low advisory

Unusual Command Execution from Web Server Parent Process on Linux

This rule detects potential command execution from a web server parent process on a Linux host, indicating a possible web shell attack where adversaries exploit web server vulnerabilities to execute arbitrary commands.

Elastic Defend +2 web-shell command-execution persistence linux
2r 3t
high advisory

DreamMaker Arbitrary File Upload Vulnerability (CVE-2026-10072)

DreamMaker by Interinfo is vulnerable to arbitrary file upload, allowing privileged remote attackers to upload and execute web shell backdoors, enabling arbitrary code execution on the server.

DreamMaker arbitrary-file-upload web-shell code-execution
2r 2t 1c
critical advisory

KnowledgeDeliver ViewState Deserialization Vulnerability Exploitation

An unauthenticated remote code execution vulnerability, CVE-2026-5426, in Digital Knowledge's KnowledgeDeliver LMS platform due to shared ASP.NET machine keys allows attackers to inject malicious code, ultimately leading to Cobalt Strike infection of user workstations.

KnowledgeDeliver viewstate-deserialization rce web-shell cobalt-strike cve-2026-5426
2r 4t 1c
high advisory

CVE-2021-47937: e107 CMS Authenticated Remote Code Execution via Theme Upload

e107 CMS 2.3.0 contains a remote code execution vulnerability (CVE-2021-47937) that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files, leading to arbitrary code execution on the server.

e107 CMS 2.3.0 cve rce e107 web-shell authenticated CVE-2021-47937
2r 2t 1c
high advisory

Sunnet CTMS/CPAS Arbitrary File Upload Vulnerability (CVE-2026-7490)

A privileged remote attacker can exploit CVE-2026-7490 in Sunnet CTMS and CPAS to upload and execute web shell backdoors, leading to arbitrary code execution on the server.

CTMS +1 arbitrary-file-upload web-shell code-execution
2r 3t 1c
critical advisory

Borg SPM 2007 Arbitrary File Upload Vulnerability (CVE-2026-6885)

An unauthenticated remote attacker can exploit an arbitrary file upload vulnerability (CVE-2026-6885) in Borg SPM 2007 to upload and execute web shell backdoors, leading to arbitrary code execution on the server.

SPM 2007 file-upload web-shell code-execution
2r 1t 1c
critical advisory

FlowiseAI File Upload Validation Bypass Leads to RCE

A file upload validation bypass vulnerability exists in FlowiseAI, where the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type, enabling an attacker to upload .js files, store malicious Node.js web shells on the server, and potentially achieve Remote Code Execution (RCE).

flowiseai file-upload rce web-shell
2r 2t 1c
medium threat

Potential Web Shell ASPX File Creation

The creation of ASPX files in web server directories, excluding legitimate processes, indicates potential web shell deployment for persistence on Windows systems.

exploited SharePoint web-shell persistence windows
2r 1t
low advisory

Uncommon Destination Port Connection by Web Server on Linux

The rule identifies unusual outbound network connections on non-standard ports originating from web server processes on Linux systems, indicative of potential web shell activity or unauthorized communication.

Elastic Defend persistence execution command-and-control web shell linux
2r 4t
high advisory

Windows Shell Execution from IIS Installation Directory

Detection of command-line tools executing from the IIS installation directory on Windows systems, potentially indicating exploitation of IIS-reliant software like Microsoft Exchange.

Exchange Server +3 iis web-shell command-execution windows
2r 2t