CVE-2016-0701: OpenSSL

Low severity, CVSS 3.7. EPSS: 83.6% chance of exploitation in the next 30 days.

The DH_check_pub_key function in crypto/dh/dh_check.c in OpenSSL 1.0.2 before 1.0.2f does not ensure that prime numbers are appropriate for Diffie-Hellman (DH) key exchange, which makes it easier for remote attackers to discover a private DH exponent by making multiple handshakes with a peer that chose an inappropriate number, as demonstrated by a number in an X9.42 file.

Affected products

• OpenSSL OpenSSL: version 1.0.2 only; version 1.0.2a only; version 1.0.2b only; version 1.0.2c only; version 1.0.2d only; version 1.0.2e only

Published 2016-02-15. Last modified 2026-06-17.