{"id":"CVE-2021-34430","details":"Eclipse TinyDTLS through 0.9-rc1 relies on the rand function in the C library, which makes it easier for remote attackers to compute the master key and then decrypt DTLS traffic.","modified":"2026-08-27T08:40:38.134564Z","published":"2021-07-08T03:15:07.643Z","references":[{"type":"REPORT","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse-tinydtls/tinydtls","events":[{"introduced":"0"},{"last_affected":"ded031bc0642875daa47946d10e974318a5c95c4"},{"introduced":"dad634471a8ff125b1b00d4e8141ddd5055eb8ef"},{"last_affected":"dad634471a8ff125b1b00d4e8141ddd5055eb8ef"}],"database_specific":{"cpe":["cpe:2.3:a:eclipse:tinydtls:*:*:*:*:*:*:*:*","cpe:2.3:a:eclipse:tinydtls:0.9:rc1:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"last_affected":"0.8.2"},{"introduced":"0.9-rc1"},{"last_affected":"0.9-rc1"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["0.9-rc1","v0.9-rc1","_old/release-0.8.2","_old/release-0.8.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34430.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}