Security update for mDNSResponder

Current versions of Apple products use the updated version of Bonjour. For previous versions, Apple has issued a security update.

Apple has issued a security update for mDNSResponder, the low-level open source software that implements Bonjour in Apple and third-party products.

Which Apple platforms are affected?

OS X:

• Versions prior to OS X El Capitan v10.11.1

• Versions prior to OS X Yosemite v10.10.5 with Security Update 2015-004 Yosemite

• Versions prior to OS X Mavericks v10.9.5 with Security Update 2015-007 Mavericks

iOS versions prior to iOS 9.1

watchOS versions prior to watchOS 2.1

AirPort Base Station Firmware versions prior to 7.7.7 and 7.6.7

Is the third-party product I use affected by this issue?

Apple has coordinated with many vendors to make sure that they are aware of the availability of this update.

For non-Apple products, we suggest that you reach out to your vendor to determine if a product you use is affected and whether the vendor has already updated their product.