Vulnerability in Garmin Forerunner 235
CVE-2020-27483
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0007.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27483?
- CVE-2020-27483 is a critical-severity vulnerability in Garmin Forerunner 235, classified under Improper Validation of Array Index. CVSS score: 9.9/10. Published 2020-11-16.
- How severe is CVE-2020-27483?
- Critical severity. CVSS v3 base score is 9.9 out of 10.