msm1267 writes: The mystery OpenSSL patch released today addresses a critical certificate validation issue where anyone with an untrusted TLS certificate can become a Certificate Authority. While serious, the good news according to the OpenSSL Project is that few downstream organizations have deployed the June update where the bug was introduced. From the linked piece: The vulnerability allows an attacker with an untrusted TLS certificate to be treated as a certificate authority and spoof another website. Attackers can use this scenario to redirect traffic, set up man-in-the-middle attacks, phishing schemes and anything else that compromises supposedly encrypted traffic. [Rich Salz, one of the developers] said there are no reports of public exploits.