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CVE-2026-84521

Quick assessment

Affected
Apple iOS and iPadOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

已通过改进的内存管理修复了一个“use after free”（释放后使用）问题。该问题已在以下版本中修复：iOS 26.7 和 iPadOS 26.7、iOS 27 和 iPadOS 27、macOS Golden Gate 27、macOS Sequoia 15.8、macOS Tahoe 26.7 以及 visionOS 27。受影响的应用程序可能会导致系统意外终止。

AI Predicted 5.5 Difficulty: Hard EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1201.005

Affected Version Matrix 6

VendorProduct Version RangeStatus
Apple iOS and iPadOS < 26.7 affected
< 27 affected
Apple macOS < 15.8 affected
< 26.7 affected
< 27 affected
Apple visionOS < 27 affected
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I. Basic Information for CVE-2026-84521

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27. An app may be able to cause unexpected system termination.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apple iOS and iPadOS 0 ~ 26.7 -
Apple macOS 0 ~ 15.8 -
Apple visionOS 0 ~ 27 -

II. Public POCs for CVE-2026-84521

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-84521

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Same Patch Batch · Apple · 2026-09-14 · 245 CVEs total

CVE-2026-84527 苹果iOS 27等系统日志信息泄露漏洞
CVE-2026-84635 Apple 多系统 27 版本恶意网页致进程意外终止
CVE-2026-28933 Apple macOS 资源管理错误漏洞
CVE-2026-28899 Apple macOS 安全漏洞
CVE-2026-65362 Apple macOS 权限许可和访问控制问题漏洞
CVE-2026-65374 Apple macOS 缓冲区错误漏洞
CVE-2026-84623 Apple iOS 安全漏洞
CVE-2026-84622 Apple多系统内核内存未初始化，可被提权
CVE-2026-28836 Apple macOS 安全漏洞
CVE-2026-65375 Apple macOS 安全漏洞
CVE-2026-84589 Apple macOS 安全漏洞
CVE-2026-84566 iOS/macOS 26.7/27 内存处理缺陷致内核崩溃
CVE-2026-43787 macOS多版本逻辑缺陷致信息泄露
CVE-2026-84531 iOS/macOS 27：NTLM输入越界写漏洞
CVE-2026-84618 Apple macOS 安全漏洞
CVE-2026-43695 苹果多系统授权状态管理缺陷
CVE-2026-84550 Apple macOS 安全漏洞
CVE-2026-65380 Apple macOS 安全漏洞
CVE-2026-64712 Apple macOS 权限许可和访问控制问题漏洞
CVE-2026-86886 iOS/iPadOS 26.7 路径遍历漏洞

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: iOS and iPadOS
Same vendor: Apple

V. Comments for CVE-2026-84521

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