CVE-2019-1549: OpenSSL

Medium severity, CVSS 5.3. EPSS: 6.2% chance of exploitation in the next 30 days.

OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).

Affected products

• OpenSSL OpenSSL: from 1.1.1, up to and including 1.1.1c

Published 2019-09-10. Last modified 2026-06-17.