Listen to this Post
CVE-2025-9520 is an Insecure Direct Object Reference (IDOR) vulnerability found in Omada Controllers . It resides in the software’s authorization mechanism, specifically within how API requests handle user account identifiers . An authenticated attacker with Administrator-level permissions can exploit this by intercepting and manipulating legitimate account management requests . By modifying a user-controlled key or object reference—such as an account ID—in the request to point to the Owner account, the application fails to properly validate if the Administrator has the right to access that target . This authorization bypass (CWE-639) allows the attacker to modify Owner account properties, potentially resetting credentials and seizing complete control of the controller . The attack vector is network-based with low complexity, requiring no user interaction, and results in a high integrity impact .
Platform: Omada Controllers
Version: < 6.0
Vulnerability : IDOR Privilege Escalation
Severity: HIGH (8.3)
date: January 26, 2026
Prediction: Patched in v6.0
What Undercode Say:
Analytics
The vulnerability has a CVSS v4.0 score of 8.3 (High) with the vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L . This indicates a network-based attack with low complexity that requires high privileges (Administrator) but no user interaction. It has a high impact on integrity, meaning an attacker can modify system files or data, but no impact on confidentiality or availability . The attack is considered to have low sub-system impact . The vulnerability was reserved on August 27, 2025, and published on January 26, 2026 . It is classified under CWE-639: Authorization Bypass Through User-Controlled Key . Official patches were released concurrently with the advisory in Omada Controller version 6.0 .
Bash Commands and Detection
The following commands can help administrators audit recent changes and restrict access to the Omada Controller management interface as a mitigation measure .
Example iptables rules to restrict management interface access (default ports 443/8043) Adjust interface and IP ranges according to your environment Allow access only from a trusted management network (e.g., 10.0.0.0/24) to HTTPS port iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT iptables -A INPUT -p tcp --dport 443 -j DROP Log dropped connection attempts for monitoring iptables -A INPUT -p tcp --dport 443 -j LOG --log-prefix "Omada-Blocked: " Check audit logs for Owner account modifications (path may vary) grep -i "owner.modif" /var/log/omada/.log List all administrator accounts for review (Assuming a command-line interface or database query; this is a placeholder) omada-show-admins
Exploit
There is no public proof-of-concept (PoC) or Metasploit module confirmed at the time of writing . However, the exploitation logic is understood to be a standard IDOR attack. An attacker with a valid Administrator session would use an intercepting proxy (like Burp Suite) to capture an API request for account management. They would then modify a parameter containing a user ID (e.g., user_id=123) to reference the Owner account’s ID (e.g., user_id=1). If the application fails to verify that the Administrator is authorized to modify the Owner account, the request will be processed, allowing the attacker to change the Owner’s password or email, effectively hijacking the account .
Protection from this CVE
The primary protection is to update to the fixed version .
1. Patch Immediately: Upgrade Omada Controllers to version 6.0 or later .
2. Network Segmentation: Restrict network access to the Omada Controller management interface. Use firewall rules (like the iptables example above) to allow access only from trusted administrative workstations or IP ranges .
3. Access Control: Review all accounts with Administrator privileges and remove any that are unnecessary. Implement the principle of least privilege .
4. Monitoring: Enable comprehensive audit logging and set up alerts for any changes made to the Owner account . Monitor API logs for requests where an Administrator account attempts to access Owner-level resources .
5. Multi-Factor Authentication (MFA): If supported by the Omada Controller version, enable MFA for all administrative accounts to add an extra layer of security against compromised credentials .
Impact
Successful exploitation allows an authenticated Administrator to escalate their privileges to that of the Owner . The Owner is the super-user account with the highest level of control over the Omada Controller and all managed devices (access points, switches, gateways) . An attacker who hijacks this account can:
Lock out the legitimate Owner .
Gain unrestricted access to all network configurations and connected services .
Disrupt network operations, deploy malicious configurations, or use the controller as a pivot point for further attacks on the internal network .
This constitutes a complete compromise of the network management plane .
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
