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Security Checkup

Keep your Mac secure

Does this affect me? Issues Apple says may have been exploited, the latest security updates and the settings worth checking — in Apple's own words, with a link to every source.

34

updates with published security content for macOS

4

issues (CVE) Apple says may have been exploited

2121

CVE entries across those security notes — one fix can be listed in several updates

Counted from the updates Osnivo has recorded since 15 September 2025, as published on Apple's security releases pages.

Is my device patched?

Apple fixes these issues in software updates. Should I Update? checks your model and version against every update below and tells you what to install.

Your devices:
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What Apple says may have been exploited

Apple's own words from its security notes, newest first. If one of these applies to your version, install the update listed.

  • CoreGraphics · CVE-2026-86950

    “Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.”

    Fixed in macOS Sequoia 15.8.1 · 28 Sep 2026 ↗ macOS Tahoe 26.7.1 · 28 Sep 2026 ↗

  • dyld · CVE-2026-20700

    “An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.”

    Fixed in macOS Tahoe 26.3 · 11 Feb 2026 ↗

  • WebKit · CVE-2025-43529

    “Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.”

    Fixed in macOS Tahoe 26.2 · 12 Dec 2025 ↗

  • WebKit · CVE-2025-14174

    “Processing maliciously crafted web content may lead to memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-43529 was also issued in response to this report.”

    Fixed in macOS Tahoe 26.2 · 12 Dec 2025 ↗

Settings to check on your Mac

Each path is copied from Apple's User Guide. Open it on your Mac, check it, tick it off — ticks stay in this browser only.

of 8 checked

  • Adds fingerprints so you can unlock your Mac and approve purchases and other requests with Touch ID.

    System Settings then Touch ID & Password then Add Fingerprint

    Apple's wording and where it used to be

  • Lets you locate your Mac with the Find My app if it is lost.

    System Settings then [your name] then iCloud then See All then Find My Mac

    Apple's wording and where it used to be

  • Sets whether your Mac checks for, downloads and installs updates automatically.

    System Settings then General then Software Update then Automatic Updates

    Apple's wording and where it used to be

  • Checks for and installs macOS software updates.

    System Settings then General then Software Update

    Apple's wording and where it used to be

  • Adds a layer of security by keeping anyone from decrypting or accessing the data on your Mac without your login password.

    System Settings then Privacy & Security then FileVault

    Apple's wording and where it used to be

  • Sets how long after the screen saver begins or the display turns off a password is required.

    System Settings then Lock Screen then Require password after screen saver begins or display is turned off

    Apple's wording and where it used to be

  • Protects your Mac from unwanted contact initiated by other computers on the internet or a network.

    System Settings then Network then Firewall

    Apple's wording and where it used to be

  • Controls which apps can see the location of your Mac.

    System Settings then Privacy & Security then Location Services

    Apple's wording and where it used to be
New Mac? The Setup Companion's first hour covers security, account and backup.

Latest security updates

The newest updates Apple published security content for on macOS.

Sources for this page

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