CVE-2019-14317

5.3 mediumEPSS 1.8%

Medium (5.3) in wolfssl wolfssl. EPSS 1.8% chance of exploitation in the next 30 days.

wolfSSL and wolfCrypt 4.1.0 and earlier (formerly known as CyaSSL) generate biased DSA nonces. This allows a remote attacker to compute the long term private key from several hundred DSA signatures via a lattice attack. The issue occurs because dsa.c fixes two bits of the generated nonces.

Severity

CVSS 3.1

5.3 medium

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

EPSS: 1.8% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
CWE: CWE-331
Published: 2019-12-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wolfssl:wolfssl

References

https://www.wolfssl.com/docs/security-vulnerabilities/
https://www.wolfssl.com/docs/security-vulnerabilities/

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