CVE-2026-20671
Logic Issue in Apple OS Network Stack Enables Traffic Interception
Publication date: 2026-02-11
Last updated on: 2026-04-02
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | tvos | to 26.3 (exc) |
| apple | visionos | to 26.3 (exc) |
| apple | watchos | to 26.3 (exc) |
| apple | ipados | to 18.7.5 (exc) |
| apple | ipados | From 26.0 (inc) to 26.3 (exc) |
| apple | iphone_os | to 18.7.5 (exc) |
| apple | iphone_os | From 26.0 (inc) to 26.3 (exc) |
| apple | macos | From 15.0 (inc) to 15.7.4 (exc) |
| apple | macos | From 26.0 (inc) to 26.3 (exc) |
| apple | macos | From 14.0 (inc) to 14.8.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-77 | The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
Can you explain this vulnerability to me?
This vulnerability is a logic issue that has been addressed by implementing improved checks in various Apple operating systems. It allows an attacker who is in a privileged network position to potentially intercept network traffic.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow an attacker with privileged network access to intercept your network traffic, potentially exposing sensitive information transmitted over the network.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Apple devices to the fixed versions of the operating systems as soon as possible.
- Update watchOS to version 26.3 or later.
- Update tvOS to version 26.3 or later.
- Update macOS Tahoe to version 26.3 or later.
- Update macOS Sonoma to version 14.8.4 or later.
- Update macOS Sequoia to version 15.7.4 or later.
- Update iOS and iPadOS to versions 18.7.5 or later.
- Update visionOS to version 26.3 or later.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know