Security experts from Tripwire, Imperva and ESET, discuss the severity of the issue. The latest vulnerability is severe because it allows for an attack on the chain of trust, i.e. validation, of certificates used in the encryption process. The vulnerability affects only newer versions of OpenSSL, whereas Heartbleed was very widespread. The most common usage of SSL Servers is the authentic authentication server, where the clientates the authentic clientates SSL authentication server. In particular, all popular browsers, Firefox, Internet Explorer and Safari do not use OpenSSL.”]
Source: https://informationsecuritybuzz.com/articles/security-experts-comment-on-openssl-patch/