{"cve":"CVE-2020-10023","nvd":{"published":"2020-05-11T23:15:11.520","modified":"2026-06-17T02:47:13.453","status":"Modified","description":"The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":6.8},"cwes":["CWE-120"],"references":["https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023","https://github.com/zephyrproject-rtos/zephyr/pull/23304","https://github.com/zephyrproject-rtos/zephyr/pull/23646","https://github.com/zephyrproject-rtos/zephyr/pull/23649","https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-29"],"products":["zephyrproject:zephyr"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2020-10023","score":0.00474,"percentile":0.41001,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}