{"id":"CVE-2020-10059","aliases":["EUVD-2020-2524","GHSA-fhjj-6gr2-w5wg"],"status":"published","title":"UpdateHub Module Explicitly Disables TLS Verification","description":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack. This is mitigated by firmware images requiring valid signatures. However, there is no benefit to using DTLS without the peer checking. See NCC-ZEP-018 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0121,"percentile":0.68696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2020-05-11T22:26:16Z","modified":"2026-06-17T02:47:16Z","products":[{"vendor":"zephyrproject","product":"zephyr"},{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-36","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr/pull/24954","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr/pull/24999","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr/pull/24997","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10059","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10059"},{"url":"https://docs.zephyrproject.org/latest/security/vulnerabilities.html#CVE-2020-10059"},{"url":"https://github.com/advisories/GHSA-fhjj-6gr2-w5wg"}],"sources":{"cve":[{"id":"CVE-2020-10059","title":"UpdateHub Module Explicitly Disables TLS Verification","description":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack. This is mitigated by firmware images requiring valid signatures. However, there is no benefit to using DTLS without the peer checking. See NCC-ZEP-018 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.","status":"published","published":"2020-05-11T22:26:16.442Z","modified":"2024-09-17T02:07:14.701Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2020-2524","description":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack. This is mitigated by firmware images requiring valid signatures. However, there is no benefit to using DTLS without the peer checking. See NCC-ZEP-018 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.","status":"published","published":"2020-05-11T22:26:16Z","modified":"2024-09-17T02:07:14Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:28:43.354671Z"}],"ghsa":[{"id":"GHSA-fhjj-6gr2-w5wg","title":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack....","description":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack. This is mitigated by firmware images requiring valid signatures. However, there is no benefit to using DTLS without the peer checking. See NCC-ZEP-018 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.","status":"published","published":"2022-05-24T17:17:40Z","modified":"2023-01-29T05:02:51Z","updated_at":"2026-11-02T14:45:10.945052Z"}],"nvd":[{"id":"CVE-2020-10059","description":"The UpdateHub module disables DTLS peer checking, which allows for a man in the middle attack. This is mitigated by firmware images requiring valid signatures. However, there is no benefit to using DTLS without the peer checking. See NCC-ZEP-018 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.","status":"published","published":"2020-05-11T23:15:11.973Z","modified":"2026-06-17T02:47:16.43Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:06:00.784809Z"}]}}