CVE-2019-12789
6.8 · MEDIUMOverview
CVE-2019-12789 is a medium-severity vulnerability affecting actiontec t2200h_firmware. It was published on June 17, 2019 and has a CVSS 3.0 base score of 6.8 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered on Actiontec T2200H T2200H-31.128L.08 devices, as distributed by Telus. By attaching a UART adapter to the UART pins on the system board, an attacker can use a special key sequence (Ctrl-\) to obtain a shell with root privileges. After gaining root access, the attacker can mount the filesystem read-write and make permanent modifications to the device including bricking of the device, disabling vendor management of the device, preventing automatic upgrades, and permanently installing malicious code on the device.
Remediation
Check the references section for vendor advisories and patches from actiontec. Update t2200h_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2019-12789?
CVE-2019-12789 is a medium-severity vulnerability affecting actiontec t2200h_firmware. It was published on June 17, 2019 and has a CVSS 3.0 base score of 6.8 (MEDIUM).
How severe is CVE-2019-12789?
This vulnerability has a CVSS 3.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-12789?
Check the references section for vendor advisories and patches from actiontec. Update t2200h_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-12789?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-12789 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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