Apple OS network logic flaw allows traffic interception (fixed 26.3 & 14.8.4)
CVE-2026-20671 Published on February 11, 2026
A logic issue was addressed with improved checks. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An attacker in a privileged network position may be able to intercept network traffic.
Vulnerability Analysis
CVE-2026-20671 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Products Associated with CVE-2026-20671
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Affected Versions
Apple macOS:- Version unspecified and below 26.3 is affected.
- Version unspecified and below 26.3 is affected.
- Version unspecified and below 26.3 is affected.
- Version unspecified and below 15.7 is affected.
- Version unspecified and below 14.8 is affected.
- Version unspecified and below 26.3 is affected.
- Version unspecified and below 18.7 is affected.
- Version unspecified and below 26.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.