CVE-2021-34430

7.5 highEPSS 1.0%

High (7.5) in eclipse tinydtls. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWEs: CWE-326, CWE-338
Published: 2021-07-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

eclipse:tinydtls

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803
https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803

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