CVE-2020-27483
9.9 · CRITICALOverview
CVE-2020-27483 is a critical-severity vulnerability affecting garmin forerunner_235_firmware. It was published on November 16, 2020 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter trusts the offset provided for the stack value duplication instruction, DUP. The offset is unchecked and memory prior to the start of the execution stack can be read and treated as a TVM object. A successful exploit could use the vulnerability to leak runtime information such as the heap handle or pointer for a number of TVM context variables. Some reachable values may be controlled enough to forge a TVM object on the stack, leading to possible remote code execution.
Remediation
Check the references section for vendor advisories and patches from garmin. Update forerunner_235_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 |
|---|---|---|---|
| garmin | forerunner_235_firmware | >= 7.90, < 8.20 | Affected |
Frequently Asked Questions
What is CVE-2020-27483?
CVE-2020-27483 is a critical-severity vulnerability affecting garmin forerunner_235_firmware. It was published on November 16, 2020 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
How severe is CVE-2020-27483?
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-27483?
Check the references section for vendor advisories and patches from garmin. Update forerunner_235_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-2020-27483?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-27483 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.
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