Network traffic interception via undisclosed logic error
Published Feb 11, 2026 · Updated Feb 11, 2026
A logic error in Apple operating systems allows attackers in a privileged network position to intercept network traffic. Apple identifies the affected locus as Kernel and, on some releases, libnetcore, but has not disclosed which check mishandles network input or state. Exploitation requires control of a privileged network position and exposes traffic in transit without a reported ability to alter data or interrupt the device.
Summary
What happened
A logic error in Apple operating systems allows attackers in a privileged network position to intercept network traffic. Apple identifies the affected locus as Kernel and, on some releases, libnetcore, but has not disclosed which check mishandles network input or state. Exploitation requires control of a privileged network position and exposes traffic in transit without a reported ability to alter data or interrupt the device.
The record
- CVE
- CVE-2026-20671
- Published
- Feb 11, 2026
- Updated
- Feb 11, 2026
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- CWE-77, T1040
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 11, 2026CVE publishedPublication date reported by the CVE source.
- Feb 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <18.7
- Affected versionversion=unspecified <26.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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