Security Advisory: Multiple Vulnerabilities in TP-Link Omada Devices (CVE-2025-9291, CVE-2025-15544, CVE-2025-15627 to CVE-2025-15631)

Description of Vulnerabilities and Impacts:

Multiple vulnerabilities have been identified in TP-Link Omada controller and Omada device adoption, communication, cloud connection, and credential handling workflows.

CVE-2026-9291 Improper Certificate Validation in Omada Cloud Communications

A certification validation weakness exists in communication between affected Omada devices and cloud controllers. Certificate identity verification does not adequately validate that a presented certificate corresponds to the expected cloud controller hostname, which may allow certificate validation protections to be bypassed under specific conditions.

Successful exploitation may allow interception or modification of communication between affected devices and cloud controllers.

CVSS v4.0 Score: 7.7/ High

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVE-2026-15544: Weak Credential Protection During Omada Device Adoption

A cryptographic weakness exists in the Omada device adoption process. During adoption, authentication credentials associated with site management are transmitted using a weak hashing algorithm that does not provide sufficient protection.

An attacker who successfully intercepts adoption-related authentication traffic may be able to recover valid credentials and gain unauthorized access to managed devices or controller-managed environments.

CVSS v4.0 Score: 6.9/ Medium

CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVE-2026-15627: Hardcoded Cryptographic Keys in Omada Adoption Protocol Authentication

A cryptographic weakness exists in the Omada adoption protocol. The protocol relies on hard-coded cryptographic keys to establish trust and protect authentication exchanges between controllers and managed devices during device adoption.

An attacker may be able to impersonate trusted controllers or managed devices and gain access to sensitive adoption-related communications.

CVSS v4.0 Score: 6.9/ Medium

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVE-2026-15628: Hardcoded Certificates in Omada Device Communications

Affected Omada devices rely on embedded certificates that are shared across deployments to establish trust between controllers and managed devices.

An attacker who obtains the embedded certificates may be able to impersonate trusted controllers or devices and intercept affected communications.

CVSS v4.0 Score: 8.2/ High

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVE-2026-15629: Weak Session Key Generation in Omada Adoption Protocol

A cryptographic weakness exists in the Omada adoption protocol where session encryption keys used to protect communications between controllers and managed devices may be predictable due to insufficient entropy in session key generation.

An attacker who successfully intercepts adoption-related communications may be able to recover session encryption keys and decrypt affected communications.

CVSS v4.0 Score: 6.9/ Medium

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVE-2026-15630: Device Provisioning Race Condition in Omada Adoption Workflow

A race condition exists in the cloud-based Omada device adoption process when an attacker may be able to interact with the adoption workflow before a legitimate device completes registration, resulting in provisioning information being delivered to an attacker.

Successful exploitation may allow disclosure of provisioning information intended for a legitimate device.

CVSS v4.0 Score: 5.8/ Medium

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

CVE-2026-15631: Weak Credential Storage in Omada Devices

A cryptographic weakness exists in affected Omada devices where site credentials are protected using a legacy hashing algorithm that does not provide sufficient protection.

An attacker who obtains access to stored credential data may be able to recover valid credentials to gain unauthorized access to affected devices or management environments.

CVSS v4.0 Score: 5.7/ Medium

CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Affected Products/Versions and Fixes:

Recommendations:

We strongly recommend that users with affected devices take the following actions:

1. Follow the instructions provided on the Omada download center to download and update to the latest firmware for your specific product model.

US: Firmware Download | Omada Network Support

EN: Firmware Download | Omada Network Support

2. Ensure both Omada controllers and managed devices are updated to the latest available firmware versions.

Disclaimer:

This advisory is provided for informational purposes only and is subject to change without notice. The information is provided “as is” without warranties of any kind. TP-Link recommends that customers promptly apply available firmware updates or implement documented workarounds as provided in this advisory. Devices/systems that are not updated or mitigated as described may remain vulnerable, and TP-Link disclaims any responsibility or liability for any damages or losses arising from a failure to implement such updates.