CVE-2026-20657
Memory Handling Flaw in Apple OS Parsing Causes App Crashes
Publication date: 2026-03-25
Last updated on: 2026-03-26
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | macos | From 14.0 (inc) to 14.8.5 (exc) |
| apple | macos | From 15.0 (inc) to 15.7.5 (exc) |
| apple | ipados | to 18.7.7 (exc) |
| apple | iphone_os | to 18.7.7 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves improper memory handling when parsing a maliciously crafted file. If exploited, it may cause an application to terminate unexpectedly.
How can this vulnerability impact me? :
The impact of this vulnerability is that an application may crash or terminate unexpectedly when processing a specially crafted file, potentially disrupting normal use of the affected software.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 18.7.7, iPadOS 18.7.7, macOS Sequoia 15.7.5, or macOS Sonoma 14.8.5.
Avoid parsing any untrusted or maliciously crafted files until the update is applied, as the vulnerability may lead to unexpected app termination.