What’s Vulnerable › Vulnerabilities

CVE-2021-34430

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-08 · updated 2026-06-17
• Weakness: CWE-338

Description

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.

Affected products

• The Eclipse Foundation Eclipse TinyDTLS: through 0.8.2; 0.9-rc1

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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