CVE-2026-20671

A logic issue was addressed with improved checks. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker in a privileged network position may be able to intercept network traffic.

Published: 2026-02-11 Last update: 2026-04-02 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-20671 is rated Low Risk (14.5/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-20671

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-12 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-20671

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.1 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-20671

Affected software / configurations for CVE-2026-20671

Vendor Product Version Raw CPE
apple ipados < 18.7.5 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 26.0, < 26.3 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 18.7.5 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 26.0, < 26.3 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos >= 14.0, < 14.8.4 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 15.0, < 15.7.4 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 26.0, < 26.3 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos < 26.3 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple visionos < 26.3 cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
apple watchos < 26.3 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

References for CVE-2026-20671

URL Tags
https://support.apple.com/en-us/126346 Release Notes Vendor Advisory
https://support.apple.com/en-us/126347 Release Notes Vendor Advisory
https://support.apple.com/en-us/126348 Release Notes Vendor Advisory
https://support.apple.com/en-us/126349 Release Notes Vendor Advisory
https://support.apple.com/en-us/126350 Release Notes Vendor Advisory
https://support.apple.com/en-us/126351 Release Notes Vendor Advisory
https://support.apple.com/en-us/126352 Release Notes Vendor Advisory
https://support.apple.com/en-us/126353 Release Notes Vendor Advisory
cvelogic Threat Intelligence