MACOS · CVE-2026-84586 · Vendor
FIX → 27.0
Apple's macOS Golden Gate 27 security notes describe an information disclosure flaw in the Apple Account component. A malicious app on the Mac may be able to leak sensitive user information.
first public Sep 14, 2026 · 2 sources
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Mac users running an earlier macOS release on the listed Apple silicon and Mac Pro models. The flaw needs a malicious app already on the Mac, so the exposure is local to that machine. Systems already on macOS Golden Gate 27 are not affected by this entry.
Not affected if already-on-macos-golden-gate-27
Who cares apple, apple-account, macos, vendor-advisory
sw_vers -productVersion; a version below macOS Golden Gate 27 is exposed.Upgrade to 27.0
About the security content of macOS Golden Gate 27 - Apple Support
This document describes the security content of macOS Golden Gate 27.
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 releases page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
Released September 14, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: Processing a maliciously crafted image may lead to unexpected process termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-86882: Peter Malone
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: Processing a maliciously crafted image may lead to unexpected app termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
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CVE-2026-86918: Arni Hardarson (Neonix Security)
Entry added October 19, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to access sensitive user data
Description: This issue was addressed with improved data protection.
CVE-2026-43664: Stuart Wallace, Ilya Andr (andrd3v), Rosyna Keller of Totally Not Malicious Software, CJ Vana, David Strnadel, Daniel Febrero, Asaf Cohen, Gongyu Ma (@Mezone0), Jian Lee (@speedyfriend433)
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: A malicious application may be able to bypass Privacy preferences
Description: An authorization issue was addressed with improved state management.
CVE-2026-65404: Arni Hardarson (Neonix Security), Vinay Kumar Rasala (Xplo8E) from Appknox, Stuart Wallace, 이재영
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to access sensitive user data
Description: This issue was addressed with additional entitlement checks.
CVE-2026-112446: Sindre Sorhus, LiangWei
Entry added October 26, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to disclose kernel memory
Description: This issue was addressed by removing the vulnerable code.
CVE-2026-86940: Dave G.
Entry added October 19, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An application may be able to access restricted files
Description: A permissions issue was addressed with improved path validation.
CVE-2026-86910: an anonymous researcher
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to cause unexpected system termination or write kernel memory
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-84523: Cem Onat Karagun, an anonymous researcher
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to cause unexpected system termination
Description: A buffer overflow was addressed with improved size validation.
CVE-2026-65396: Bhaswanth Chigurupati
Entry added October 19, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to access sensitive user data
Description: A privacy issue was addressed with improved access restrictions.
CVE-2026-84582: Zhongcheng Li (CK01)
Entry added October 19, 2026
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: A local app may be able to read a persistent account identifier
Description: A permissions issue was addressed with additional restrictions.
CVE-2026-86888: Zhongcheng Li (CK01)
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to access protected user data
Description: A permissions issue was addressed with additional restrictions.
CVE-2026-84587: an anonymous researcher
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: A malicious application may be able to leak sensitive user information
Description: An information disclosure issue was addressed with improved state management.
CVE-2026-84586: Prashan Samarathunge, Zhongcheng Li (CK01)
Available for: MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023)
Impact: An app may be able to use the Sign In With Apple authentication flow to access the user's Apple Account
Description: An authentication issue was addressed with improved
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