Logic Flaw in Apple Operating Systems Could Allow Network Traffic Interception
CVE-2026-20671

3.1LOW

Key Information:

Vendor

Apple
Status
Mac OS
Watch OS
Visionos
iOS And iPad OS
Vendor
CVE Published:
11 February 2026

What is CVE-2026-20671?

A logic issue was identified within various Apple operating systems that, if exploited by an attacker with privileged position on the network, could lead to the interception and manipulation of network traffic. This vulnerability has been addressed in updated versions including watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5, iPadOS 18.7.5, visionOS 26.3, iOS 26.3, and iPadOS 26.3.

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Affected Version(s)

iOS and iPadOS < 26.3

iOS and iPadOS < 18.7

macOS < 26.3

References

https://support.apple.com/en-us/126348
https://support.apple.com/en-us/126352
https://support.apple.com/en-us/126353

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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