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Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by some product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.
If your macOS isn't up to date, you may be able to update to a later version.
Which macOS version is installed?
From the Apple menu in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.
Which macOS version is the latest?
These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
macOS | Latest version |
---|---|
macOS Big Sur | 11.0.1 |
macOS Catalina | 10.15.7 |
macOS Mojave | 10.14.6 |
macOS High Sierra | 10.13.6 |
macOS Sierra | 10.12.6 |
OS X El Capitan | 10.11.6 |
OS X Yosemite | 10.10.5 |
OS X Mavericks | 10.9.5 |
OS X Mountain Lion | 10.8.5 |
OS X Lion | 10.7.5 |
Mac OS X Snow Leopard | 10.6.8 |
Mac OS X Leopard | 10.5.8 |
Mac OS X Tiger | 10.4.11 |
Mac OS X Panther | 10.3.9 |
Mac OS X Jaguar | 10.2.8 |
Mac OS X Puma | 10.1.5 |
Mac OS X Cheetah | 10.0.4 |
About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.
Apple security documents reference vulnerabilities by CVE-ID when possible.
OS X El Capitan v10.11.6 and Security Update 2016-004
Released July 18, 2016
apache_mod_php
Available for: OS X Yosemite v10.10.5 and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in PHP versions prior to 5.5.36. These were addressed by updating PHP to version 5.5.36.
CVE-2016-5093
CVE-2016-5094
CVE-2016-5096
CVE-2013-7456
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a system denial of service
Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-4649 : Juwei Lin(@fuzzerDOTcn) of Trend Micro
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-4647 : Juwei Lin(@fuzzerDOTcn) of Trend Micro
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to determine kernel memory layout
Description: An out-of-bounds read was addressed through improved input validation.
CVE-2016-4648 : Juwei Lin(@fuzzerDOTcn) of Trend Micro; Jack Tang and Moony Li of Trend Micro working with Trend Micro's Zero Day Initiative
Audio
Available for: OS X El Capitan v10.11 and later
Impact: Parsing a maliciously crafted audio file may lead to the disclosure of user information
Description: An out-of-bounds read was addressed through improved bounds checking.
CVE-2016-4646 : Steven Seeley of Source Incite working with Trend Micro's Zero Day Initiative
bsdiff
Available for: OS X El Capitan v10.11 and later
Impact: A local attacker may be able to cause unexpected application termination or arbitrary code execution
Description: An integer overflow existed in bspatch. This issue was addressed through improved bounds checking.
CVE-2014-9862 : an anonymous researcher
CFNetwork
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to view sensitive user information
Description: A permissions issue existed in the handling of web browser cookies. This issue was addressed through improved restrictions.
CVE-2016-4645 : Abhinav Bansal of Zscaler Inc.
CFNetwork Credentials
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to leak sensitive user information
Description: A downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials.
CVE-2016-4644 : Jerry Decime coordinated via CERT
CFNetwork Proxies
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to leak sensitive user information
Description: A validation issue existed in the parsing of 407 responses. This issue was addressed through improved response validation.
CVE-2016-4643 : Xiaofeng Zheng of Blue Lotus Team, Tsinghua University; Jerry Decime coordinated via CERT
CFNetwork Proxies
Available for: OS X El Capitan v10.11 and later
Impact: An application may unknowingly send a password unencrypted over the network
Description: Proxy authentication incorrectly reported HTTP proxies received credentials securely. This issue was addressed through improved warnings.
CVE-2016-4642 : Jerry Decime coordinated via CERT
CoreGraphics
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to elevate privileges
Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation.
CVE-2016-4652 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
CoreGraphics
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-4637 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
FaceTime
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to cause a relayed call to continue transmitting audio while appearing as if the call terminated
Description: User interface inconsistencies existed in the handling of relayed calls. These issues were addressed through improved FaceTime display logic.
CVE-2016-4635 : Martin Vigo
Graphics Drivers
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4634 : Stefan Esser of SektionEins
ImageIO
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4629 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
CVE-2016-4630 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to cause a denial of service
Description: A memory consumption issue was addressed through improved memory handling.
CVE-2016-4632 : Evgeny Sidorov of Yandex
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4631 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-7705 : Craig Young of Tripwire VERT
Entry added November 30, 2017
Intel Graphics Driver
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4633 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent
IOHIDFamily
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-4626 : Stefan Esser of SektionEins
IOSurface
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A use-after-free was addressed through improved memory management.
CVE-2016-4625 : Ian Beer of Google Project Zero
Kernel
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-1863 : Ian Beer of Google Project Zero
CVE-2016-4653 : Ju Zhu of Trend Micro
CVE-2016-4582 : Shrek_wzw and Proteas of Qihoo 360 Nirvan Team
Kernel
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a system denial of service
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Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-1865 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent, CESG
Libc
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution
Description: A buffer overflow existed within the 'link_ntoa()' function in linkaddr.c. This issue was addressed through additional bounds checking.
CVE-2016-6559 : Apple
Entry added January 10, 2017
libc++abi
Available for: OS X El Capitan v10.11 and later
Impact: An application may be able to execute arbitrary code with root privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4621 : an anonymous researcher
libexpat
Available for: OS X El Capitan v10.11 and later
Impact: Processing maliciously crafted XML may lead to unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-0718 : Gustavo Grieco
LibreSSL
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in LibreSSL before 2.2.7. These were addressed by updating LibreSSL to version 2.2.7.
CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero
CVE-2016-2109 : Brian Carpenter
libxml2
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Multiple vulnerabilities in libxml2
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2015-8317 : Hanno Boeck
CVE-2016-1836 : Wei Lei and Liu Yang of Nanyang Technological University
CVE-2016-4447 : Wei Lei and Liu Yang of Nanyang Technological University
CVE-2016-4448 : Apple
CVE-2016-4483 : Gustavo Grieco
CVE-2016-4614 : Nick Wellnhofer
CVE-2016-4615 : Nick Wellnhofer
CVE-2016-4616 : Michael Paddon
Entry updated June 5, 2017
libxml2
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Parsing a maliciously crafted XML document may lead to disclosure of user information
Description: An access issue existed in the parsing of maliciously crafted XML files. This issue was addressed through improved input validation.
CVE-2016-4449 : Kostya Serebryany
libxslt
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Multiple vulnerabilities in libxslt
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-1683 : Nicolas Grégoire
CVE-2016-1684 : Nicolas Grégoire
CVE-2016-4607 : Nick Wellnhofer
CVE-2016-4608 : Nicolas Grégoire
CVE-2016-4609 : Nick Wellnhofer
CVE-2016-4610 : Nick Wellnhofer
Entry updated April 11, 2017
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to gain root privileges
Description: A type confusion issue was addressed through improved memory handling.
CVE-2016-4638 : Yubin Fu of Tencent KeenLab working with TrendMicro's Zero Day Initiative
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code leading to compromise of user information
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4640 : an anonymous researcher working with Trend Micro’s Zero Day Initiative
Entry updated November 16, 2016
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code leading to the compromise of user information
Description: A type confusion issue was addressed through improved memory handling.
CVE-2016-4641 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a denial of service
Description: A memory initialization issue was addressed through improved memory handling.
CVE-2016-4639 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
OpenSSL
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in OpenSSL. These issues were resolved by backporting the fixes from OpenSSL 1.0.2h/1.0.1 to OpenSSL 0.9.8.
CVE-2016-2105 : Guido Vranken
CVE-2016-2106 : Guido Vranken
CVE-2016-2107 : Juraj Somorovsky
CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero
CVE-2016-2109 : Brian Carpenter
CVE-2016-2176 : Guido Vranken
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted SGI file may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
Mac Os X 10.11
CVE-2016-4601 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted Photoshop document may lead to unexpected application termination or arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4599 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Pages For Mac Os X 10.11.6
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted FlashPix Bitmap Image may lead to unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4596 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4597 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4600 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4602 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4598 : Ke Liu of Tencent's Xuanwu Lab
Safari Login AutoFill
Available for: OS X El Capitan v10.11 and later
Impact: A user's password may be visible on screen
Description: An issue existed in Safari's password auto-fill. This issue was addressed through improved matching of form fields.
CVE-2016-4595 : Jonathan Lewis from DeARX Services (PTY) LTD
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Sandbox Profiles
Available for: OS X El Capitan v10.11 and later
Impact: A local application may be able to access the process list
Pages For Mac El Capitan
Description: An access issue existed with privileged API calls. This issue was addressed through additional restrictions.
Mac Os X 10.11.6 Dmg
CVE-2016-4594 : Stefan Esser of SektionEins
Os X 10.11.6 Update
OS X El Capitan v10.11.6 includes the security content of Safari 9.1.2.