{"id":"CVE-2021-3319","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3319","generatedAt":"2026-10-28T02:57:40.911Z","title":"DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses.","description":"DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses. Zephyr versions >= > v2.4.0 contain NULL Pointer Dereference (CWE-476), Attempt to Access Child of a Non-structure Pointer (CWE-588). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94jg-2p6q-5364","published":"2021-10-05T21:15:09.000Z","lastModified":"2026-06-17T04:04:56.000Z","status":"Modified","sourceIdentifier":"vulnerabilities@zephyrproject.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-476","CWE-588"],"affected":["zephyrproject/zephyr"],"epss":{"score":0.0088,"percentile":0.5884,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94jg-2p6q-5364","tags":["Exploit","Patch","Third Party Advisory"],"source":"vulnerabilities@zephyrproject.org"},{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94jg-2p6q-5364","tags":["Exploit","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3319","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}