{"id":"CVE-2021-27697","aliases":["EUVD-2021-14439","GHSA-r2hp-m8f2-v2pc"],"status":"published","title":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl...","description":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01271,"percentile":0.7003,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-04-06T12:07:53Z","modified":"2026-06-17T03:45:20Z","products":[{"vendor":"riot-os","product":"riot"}],"references":[{"url":"https://github.com/RIOT-OS/RIOT/issues/16062","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27697"},{"url":"https://github.com/advisories/GHSA-r2hp-m8f2-v2pc"}],"sources":{"cve":[{"id":"CVE-2021-27697","description":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.","status":"published","published":"2021-04-06T12:07:53Z","modified":"2024-08-03T21:26:10.882Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14439","description":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.","status":"published","published":"2021-04-06T12:07:53Z","modified":"2024-08-03T21:26:10Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-r2hp-m8f2-v2pc","title":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl...","description":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.","status":"published","published":"2022-05-24T17:46:37Z","modified":"2023-01-29T05:06:16Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:45:59.056416Z"}],"nvd":[{"id":"CVE-2021-27697","description":"RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.","status":"published","published":"2021-04-06T13:15:14.327Z","modified":"2026-06-17T03:45:20.99Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}