{"cve":"CVE-2019-9183","nvd":{"published":"2020-04-23T15:15:13.950","modified":"2026-06-17T02:43:18.260","status":"Modified","description":"An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-191","CWE-787"],"references":["https://github.com/contiki-ng/contiki-ng/pull/972","https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4","https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf","https://github.com/contiki-ng/contiki-ng/pull/972","https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4"],"products":["contiki-ng:contiki-ng","contiki-os:contiki"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2019-9183","score":0.02312,"percentile":0.83395,"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."]}