Apple has just pushed out software updates that fix security vulnerabilities on the iPhone and iPad and certain versions of Mac OS X Mountain Lion and Mavericks. It has also circulated a second update that patches a vulnerability that exposes the most recent model of AirPort Extreme to the Heartbleed bug. First the Heartbleed issue: The update applies only to the latest model of AirPort Extreme and Time Capsule introduced last June. The updates correct a weakness in OpenSSL, the security software hit by the Heartbleed bug, that existed only when Apple’s Back to My Mac feature was enabled. It doesn’t affect older AirPorts and Time Capsules. The other updates for the iPhone and iPad correct a flaw that would allow an attacker to bypass certain encryption protections that are meant to prevent eavesdropping on data traffic.