{"id":"CVE-2020-12141","aliases":["EUVD-2020-4456","GHSA-jxvq-67hx-ghg3"],"status":"published","title":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause...","description":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in os/net/app-layer/snmp/snmp-ber.c.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01566,"percentile":0.75526,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-10-19T15:23:46Z","modified":"2026-06-17T02:51:28Z","products":[{"vendor":"contiki-ng","product":"contiki-ng"}],"references":[{"url":"https://twitter.com/ScepticCtf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/commit/12c824386ab60de757de5001974d73b32e19ad71#diff-32367fad664c6118fd5dda77cdf38eedc006cdd7544eca5bbeebe0b99653f8a0","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/pull/1355","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12141"},{"url":"https://github.com/advisories/GHSA-jxvq-67hx-ghg3"}],"sources":{"cve":[{"id":"CVE-2020-12141","description":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in os/net/app-layer/snmp/snmp-ber.c.","status":"published","published":"2021-10-19T15:23:46Z","modified":"2024-08-04T11:48:58.316Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-4456","description":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in os/net/app-layer/snmp/snmp-ber.c.","status":"published","published":"2021-10-19T15:23:46Z","modified":"2024-08-04T11:48:58Z","updated_at":"2026-11-03T03:07:40.81889Z"}],"ghsa":[{"id":"GHSA-jxvq-67hx-ghg3","title":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause...","description":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in os/net/app-layer/snmp/snmp-ber.c.","status":"published","published":"2022-05-24T19:17:56Z","modified":"2023-01-30T05:03:06Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:46.047512Z"}],"nvd":[{"id":"CVE-2020-12141","description":"An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in os/net/app-layer/snmp/snmp-ber.c.","status":"published","published":"2021-10-19T16:15:07.613Z","modified":"2026-06-17T02:51:28.59Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:45.704484Z"}]}}