Apple releases Meltdown patches for older macOS versions

“Apple on Tuesday took the next step toward protecting Mac users from recently disclosed security vulnerabilities that have been shown to affect many kinds of devices,” Jordan Novet reports for CNBC.

“On Tuesday Apple said it has come out with patches to the Meltdown security vulnerability — which impacts several generations of Intel chips — for macOS Sierra and OS X El Capitan, which were released in 2016 and 2015, respectively,” Novet reports. “Apple patched its latest Mac operating system, macOS High Sierra, earlier in January.”

Novet reports, “When it announced the first Meltdown patch, Apple said that it was working on mitigations against Spectre for Macs, as well as devices running the iOS mobile operating system.”

Read more in the full article here.

MacDailyNews Take: Update your Mac(s) ASAP for security’s sake.

Apple releases macOS High Sierra 10.13.3 – January 23, 2018
Intel’s Spectre patch is causing reboot problems – January 12, 2018
In wake of Spectre and Meltdown, Intel CEO offers open letter, looks to restore confidence in Intel CPU security – January 11, 2018
Apple releases iOS and macOS updates with a mitigation for Spectre CPU flaw – January 8, 2018
Meltdown and Spectre: What Apple users need to know – January 8, 2018
How Apple product users can protect themselves against Spectre and Meltdown CPU flaws – January 5, 2018
Intel’s CEO Brian Krzanich sold off the majority of his shares after finding out about the irreparable chip flaws – January 4, 2018
Apple: All Mac systems and iOS devices are affected by Meltdown and Spectre security flaws – January 4, 2018
CERT: Only way to fix Meltdown and Spectre vulnerabilities is to replace CPU – January 4, 2018
Security flaws put nearly every modern computing device containing chips from Intel, AMD and ARM at risk – January 4, 2018
Apple has already partially implemented fix in macOS for ‘KPTI’ Intel CPU security flaw – January 3, 2018
Intel’s massive chip flaw could hit Mac where it hurts – January 3, 2018


  1. Before I upgrade ASAP for security sake I’d like to find out more about the reports from a “few” customers running Broadwell and Haswell CPUs having higher system reboots after applying the firmware updates. Pretty sure if it was just a few they would have ignored them. I think I’d rather keep my Mac stable until they figure this out.

    1. Me too. I’ve lost trust in Apple at this time. It seems with the low numbers of people wanting to know about future iPhones on top of a three year or more hardware gap and various other little things, I’m not alone.

      I was at a party New Year’s Eve where a friend was showing off his new iPhone, the consensus was “Really, you spent a thousand dollars for a phone?” He put the iPhone away and I haven’t seen it since. The tide is turning and once Apple has lost the iPhone Halo effect I hope they’ll start thinking about the customer again.

  2. IOS has been patched, and if your running versions of Mac OS older then 4 years or your Mac won’t support it, its time to upgrade.

    Nothing lasts forever.. If your favorite game or app dies if you upgrade, time to look for alternatives. Not to mention, any hardware upgrade, even used, will probably be far faster then what you have if its so old it won’t run a recent version of Mac OSX

  3. Well. I downloaded the updates for Sierra and El Capitan. El Capitan installs but I get “This update is not supported for this system om Sierra. This is on a 2009 Mac Pro. Any ideas? Chips etc OK?

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