CVE-2022-25369: Dynamicweb Auth Bypass Vulnerability

CVE-2022-25369 Overview

CVE-2022-25369 is an authentication bypass vulnerability in Dynamicweb CMS that allows unauthenticated attackers to add new administrator users and subsequently achieve remote code execution. The flaw exists due to a logic issue in the application's setup phase verification, which can be exploited to re-run initial configuration steps without proper authorization checks.

Critical Impact

Unauthenticated attackers can create administrative accounts and upload malicious executable files, leading to complete system compromise through remote code execution.

Affected Products

• Dynamicweb versions prior to 9.5.9
• Dynamicweb versions prior to 9.6.16
• Dynamicweb versions prior to 9.7.8
• Dynamicweb versions prior to 9.8.11
• Dynamicweb versions prior to 9.9.8
• Dynamicweb versions prior to 9.10.18
• Dynamicweb versions prior to 9.12.8
• Dynamicweb versions prior to 9.13.0

Discovery Timeline

• 2026-01-23 - CVE CVE-2022-25369 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2022-25369

Vulnerability Analysis

This vulnerability is classified under CWE-287 (Improper Authentication), representing a critical authentication bypass flaw in Dynamicweb CMS. The vulnerability stems from a fundamental logic error in how the application determines whether setup phases should be accessible. Under normal operation, the initial setup wizard should only be available during first-time installation. However, due to improper state management and validation, attackers can trigger the setup process on fully configured systems.

The exploitation chain consists of two stages. First, an attacker exploits the logic flaw to access the setup functionality and create a new administrator account without requiring any authentication. Second, after authenticating with the newly created administrative credentials, the attacker can leverage the administrative file upload functionality to deploy executable payloads, achieving command execution on the underlying server.

Root Cause

The root cause of this vulnerability is improper authentication and authorization logic in the setup phase verification mechanism. The application fails to properly validate the system's initialization state before allowing access to sensitive configuration functionality. This logic flaw enables the setup workflow to be re-triggered on production systems that have already completed initial configuration, bypassing the intended security controls that should prevent unauthorized administrative access.

Attack Vector

The attack is network-based and requires no user interaction or prior privileges, making it highly exploitable. An attacker can remotely access the vulnerable Dynamicweb installation and invoke the setup workflow endpoints. The attack flow involves:

1. Identifying a vulnerable Dynamicweb instance exposed to the network
2. Accessing the setup phase endpoints that should be protected but remain accessible due to the logic flaw
3. Creating a new administrator account through the setup process
4. Authenticating with the newly created admin credentials
5. Uploading a malicious executable file using administrative privileges
6. Executing arbitrary commands on the server

The vulnerability does not require any specialized tools or complex techniques. Detailed technical analysis is available in the Assetnote Advisory on CVE-2022-25369.

Detection Methods for CVE-2022-25369

Indicators of Compromise

• Unexpected administrator accounts appearing in the Dynamicweb user database
• Access logs showing requests to setup or installation endpoints on production systems
• Newly uploaded executable files in web-accessible directories
• Unusual process spawning from the web server process
• Authentication events for unknown administrator accounts

Detection Strategies

• Monitor web server access logs for requests targeting setup, installation, or configuration wizard endpoints
• Implement file integrity monitoring to detect unauthorized uploads of executable files
• Configure alerting for new administrator account creation events in the CMS audit logs
• Deploy network intrusion detection rules to identify patterns associated with setup phase exploitation

Monitoring Recommendations

• Enable comprehensive audit logging for all administrative actions within Dynamicweb
• Implement real-time alerting for authentication events involving newly created administrator accounts
• Monitor outbound network connections from the web server for potential command-and-control communications
• Regularly review the list of administrative users and investigate any unexpected additions

How to Mitigate CVE-2022-25369

Immediate Actions Required

• Upgrade Dynamicweb to a patched version immediately (9.5.9, 9.6.16, 9.7.8, 9.8.11, 9.9.8, 9.10.18, 9.12.8, 9.13.0 or later)
• Audit existing administrator accounts and remove any unauthorized users
• Review web server logs for evidence of exploitation attempts
• Restrict network access to Dynamicweb administrative interfaces using firewall rules or VPN

Patch Information

Dynamicweb has released security patches addressing this vulnerability across multiple version branches. The fixed versions are 9.5.9, 9.6.16, 9.7.8, 9.8.11, 9.9.8, 9.10.18, 9.12.8, and 9.13.0 (and all subsequent releases). Organizations should upgrade to the appropriate patched version for their deployment. Updated packages are available from the Dynamicweb Release Downloads page.

Workarounds

• Block access to setup and installation endpoints at the web server or reverse proxy level until patching is possible
• Implement network segmentation to limit exposure of Dynamicweb administrative interfaces
• Deploy a web application firewall (WAF) with rules to block requests to setup-related URL patterns
• Monitor for and immediately disable any unauthorized administrator accounts

# Example: Block setup endpoints in IIS using URL Rewrite
# Add to web.config in Dynamicweb installation directory
# <rule name="Block Setup Endpoints">
#   <match url="^(Admin/)?Setup" ignoreCase="true" />
#   <action type="CustomResponse" statusCode="403" statusReason="Forbidden" statusDescription="Access Denied" />
# </rule>