CVE-2025-9872: Ivanti Endpoint Manager RCE Vulnerability

CVE-2025-9872 Overview

CVE-2025-9872 is an Unrestricted File Upload vulnerability (CWE-434) in Ivanti Endpoint Manager that enables remote code execution through insufficient filename validation. The vulnerability allows remote unauthenticated attackers to exploit weaknesses in how the application processes uploaded filenames, potentially leading to arbitrary code execution on affected systems. User interaction is required for successful exploitation.

Critical Impact

Remote unauthenticated attackers can achieve remote code execution on Ivanti Endpoint Manager servers through malicious file uploads, potentially compromising endpoint management infrastructure and all managed devices.

Affected Products

• Ivanti Endpoint Manager 2024 (versions prior to SU3 SR1)
• Ivanti Endpoint Manager 2022 (versions prior to SU8 SR2)
• Ivanti Endpoint Manager 2022 SU1 through SU8

Discovery Timeline

• 2025-09-09 - CVE-2025-9872 published to NVD
• 2025-10-10 - Last updated in NVD database

Technical Details for CVE-2025-9872

Vulnerability Analysis

This vulnerability stems from insufficient validation of uploaded filenames in Ivanti Endpoint Manager. The application fails to properly sanitize or validate filename inputs during file upload operations, creating an attack surface that enables unrestricted file upload attacks. An attacker can craft a malicious filename that bypasses security controls, allowing them to upload files with dangerous extensions or to arbitrary locations within the file system.

When a user interacts with a malicious request, the lack of proper filename validation allows an attacker to upload executable content to the server. This can result in remote code execution with the privileges of the Ivanti Endpoint Manager service account, which typically has elevated access to manage endpoints across an organization.

Root Cause

The root cause is insufficient input validation in the filename processing logic. The application does not adequately verify that uploaded filenames conform to expected patterns, contain only safe characters, or have appropriate file extensions. This allows attackers to bypass extension filters, inject path traversal sequences, or upload files that will be executed by the web server.

Attack Vector

The attack is network-based and can be initiated by an unauthenticated remote attacker. The exploitation requires user interaction, suggesting that the attack may involve social engineering tactics such as convincing an administrator to access a malicious link or process a crafted request.

The attack flow typically involves:

1. The attacker crafts a malicious request containing a specially formatted filename designed to bypass validation
2. A legitimate user with access to the Ivanti Endpoint Manager interface interacts with the malicious content
3. The insufficient filename validation allows the malicious file to be uploaded and potentially executed
4. The attacker gains remote code execution on the target system

Since no verified exploit code examples are available, technical implementation details should be referenced from the Ivanti Security Advisory September 2025.

Detection Methods for CVE-2025-9872

Indicators of Compromise

• Unusual file uploads to the Ivanti Endpoint Manager server with suspicious extensions (e.g., .aspx, .jsp, .php, .exe)
• Web server logs showing requests with encoded path traversal sequences in filenames
• Unexpected executable files appearing in web-accessible directories
• Anomalous process execution originating from Ivanti Endpoint Manager service paths

Detection Strategies

• Monitor file system activity on Ivanti Endpoint Manager servers for creation of executable files in web directories
• Implement web application firewall rules to detect malicious filename patterns and path traversal attempts
• Review IIS or web server logs for suspicious upload requests with unusual Content-Disposition headers
• Deploy endpoint detection tools to identify unauthorized code execution from Ivanti service directories

Monitoring Recommendations

• Enable enhanced logging for file upload operations in Ivanti Endpoint Manager
• Configure SIEM alerts for filename patterns containing special characters or multiple extensions
• Monitor network traffic for unusual outbound connections from Endpoint Manager servers that may indicate post-exploitation activity
• Implement file integrity monitoring on critical Ivanti Endpoint Manager directories

How to Mitigate CVE-2025-9872

Immediate Actions Required

• Update Ivanti Endpoint Manager 2024 to SU3 SR1 or later immediately
• Update Ivanti Endpoint Manager 2022 to SU8 SR2 or later
• Restrict network access to Ivanti Endpoint Manager administrative interfaces to trusted networks only
• Review server file systems for any suspicious or unexpected uploaded files

Patch Information

Ivanti has released security updates that address this vulnerability. Organizations should apply the following updates:

• Ivanti Endpoint Manager 2024: Update to SU3 SR1 or later
• Ivanti Endpoint Manager 2022: Update to SU8 SR2 or later

Detailed patch information is available in the Ivanti Security Advisory September 2025.

Workarounds

• Implement network segmentation to isolate Ivanti Endpoint Manager servers from untrusted networks
• Deploy a web application firewall (WAF) with rules to block malicious file upload attempts
• Restrict user access to upload functionality to only authorized administrators
• Enable additional authentication requirements for administrative operations

# Example: Restrict access to Ivanti EPM web interface using firewall rules
# Allow only trusted management networks
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP

# Example: IIS request filtering to block dangerous extensions
# Add to web.config in Ivanti EPM directory
# <system.webServer>
#   <security>
#     <requestFiltering>
#       <fileExtensions allowUnlisted="true">
#         <add fileExtension=".aspx" allowed="false" />
#         <add fileExtension=".asp" allowed="false" />
#       </fileExtensions>
#     </requestFiltering>
#   </security>
# </system.webServer>