OpenSSL has multiple security issues fixed in various versions, including buffer overflows, NULL pointer dereferences, and timing side-channel vulnerabilities. Affected versions include OpenSSL 3.6, 3.5, 3.4, 3.3, 3.2, 3.1, 3.0, 1.1.1, 1.1.0, 1.0.2, 1.0.1, 1.0.0, 0.9.8, 0.9.7, and 0.9.6.