{"id":"CVE-2020-27484","aliases":["EUVD-2020-19994","GHSA-q449-r33x-v693"],"status":"published","title":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. The component is: ConnectIQ...","description":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. 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 fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.","severity":{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01767,"percentile":0.78246,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2020-11-16T20:59:25Z","modified":"2026-06-17T03:09:15Z","products":[{"vendor":"garmin","product":"forerunner_235_firmware"}],"references":[{"url":"https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0004.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27484"},{"url":"https://github.com/advisories/GHSA-q449-r33x-v693"}],"sources":{"cve":[{"id":"CVE-2020-27484","description":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. 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 fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.","status":"published","published":"2020-11-16T20:59:25Z","modified":"2024-08-04T16:18:44.312Z","updated_at":"2026-11-02T14:35:53.552996Z"}],"euvd":[{"id":"EUVD-2020-19994","description":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. 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 fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.","status":"published","published":"2020-11-16T20:59:25Z","modified":"2024-08-04T16:18:44Z","updated_at":"2026-11-03T03:07:12.435876Z"}],"ghsa":[{"id":"GHSA-q449-r33x-v693","title":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. The component is: ConnectIQ...","description":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. 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 fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.","status":"published","published":"2022-05-24T17:34:18Z","modified":"2023-01-29T05:05:22Z","cwes":["CWE-190"],"updated_at":"2026-11-02T14:45:46.414099Z"}],"nvd":[{"id":"CVE-2020-27484","description":"Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. 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 fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.","status":"published","published":"2020-11-16T21:15:13.377Z","modified":"2026-06-17T03:09:15.183Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:06:24.137599Z"}]}}